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<div class="title">opennurbs_mesh.h</div>  </div>
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<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/* $NoKeywords: $ */</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">// Copyright (c) 1993-2012 Robert McNeel &amp; Associates. All rights reserved.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">// OpenNURBS, Rhinoceros, and Rhino3D are registered trademarks of Robert</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">// McNeel &amp; Associates.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">// THIS SOFTWARE IS PROVIDED &quot;AS IS&quot; WITHOUT EXPRESS OR IMPLIED WARRANTY.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment">// ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE AND OF</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment">// MERCHANTABILITY ARE HEREBY DISCLAIMED.</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment">//              </span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment">// For complete openNURBS copyright information see &lt;http://www.opennurbs.org&gt;.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160; </div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#if !defined(OPENNURBS_MESH_INC_)</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#define OPENNURBS_MESH_INC_</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160; </div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment">// Class  ON_Mesh</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"><a class="line" href="class_o_n___mesh_parameters.html">   24</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___mesh_parameters.html">ON_MeshParameters</a></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;{</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;  <span class="comment">// surface meshing perameters</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160; </div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;  <span class="keyword">enum</span> MESH_STYLE</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;  {</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;    <span class="comment">// All of these enum values must be in the range 0-255 because</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    <span class="comment">// unsigned chars are use for storage in some locations.</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;    unset_mesh_style      =   0,</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;    render_mesh_fast      =   1, <span class="comment">// Use ON_MeshParameters::FastRenderMesh</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    render_mesh_quality   =   2, <span class="comment">// Use ON_MeshParameters::QualityRenderMesh</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;    <span class="comment">// 3 - 8 reserved for future predefined render mesh styles</span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    render_mesh_custom    =   9,<span class="comment">// Use ON_3dmSettings::m_CustomRenderMeshSettings</span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    render_mesh_per_object = 10 <span class="comment">// Use ON_Object::GetMeshParameters().</span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;  };</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160; </div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="comment">    Parameters that create render meshes where meshing</span></div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="comment">    speed is prefered over mesh quality.</span></div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;  <span class="keyword">static</span> </div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___mesh_parameters.html">ON_MeshParameters</a> FastRenderMesh;</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160; </div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="comment">    Parameters that create render meshes where mesh quality</span></div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="comment">    is prefered over meshing speed.</span></div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;  <span class="keyword">static</span> </div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___mesh_parameters.html">ON_MeshParameters</a> QualityRenderMesh;</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160; </div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="comment">    Get a value to use for tolerance based on the relative_tolerance</span></div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;<span class="comment">    and actual size.</span></div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="comment">    relative_tolerance - [in] </span></div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;<span class="comment">      See m_relative_tolerance field</span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="comment">    actual_size - [in]</span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="comment">      Diagonal ov object bounding box or some similar measure of</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="comment">      an object&#39;s 3d size.</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="comment">    A value that can be used for m_tolerance if no</span></div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="comment">    user specified value is available.</span></div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;  <span class="keyword">static</span></div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;  <span class="keywordtype">double</span> Tolerance( <span class="keywordtype">double</span> relative_tolerance, <span class="keywordtype">double</span> actual_size );</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160; </div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="comment">    Get a value to use for minimum edge length base on max_edge_length</span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="comment">    and tolerance settings.</span></div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;<span class="comment">    max_edge_length - [in] </span></div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="comment">      3d maximum edge length used to create mesh.</span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;<span class="comment">    tolerance - [in]</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="comment">      3d distance tolerance used to create mesh.</span></div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="comment">    A value that can be used for m_min_edge_length if no</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="comment">    user specified value is available.</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;  <span class="keyword">static</span></div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;  <span class="keywordtype">double</span> MinEdgeLength( <span class="keywordtype">double</span> max_edge_length, <span class="keywordtype">double</span> tolerance );</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160; </div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;  <a class="code" href="class_o_n___mesh_parameters.html">ON_MeshParameters</a>();</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;  ~<a class="code" href="class_o_n___mesh_parameters.html">ON_MeshParameters</a>();</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;  <span class="comment">// C++ default works fine // ON_MeshParameters(const ON_MeshParameters&amp; );</span></div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;  <span class="comment">// C++ default works fine // ON_MeshParameters&amp; operator=(const ON_MeshParameters&amp;);</span></div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160; </div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;  <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> <a class="code" href="class_o_n___mesh_parameters.html">ON_MeshParameters</a>&amp;) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;  <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code" href="class_o_n___mesh_parameters.html">ON_MeshParameters</a>&amp;) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160; </div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;  <span class="comment">// compares with mesh&#39;s mesh parameters</span></div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;  <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>&amp;) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;  <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>&amp;) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;  </div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;  <span class="keywordtype">void</span> Dump( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>&amp; test_log ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160; </div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;  <span class="keywordtype">void</span> Default(); </div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160; </div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="comment">    Tool for provding a simple slider interface.</span></div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="comment">    density - [in] 0.0 &lt;= density &lt;= 1.0</span></div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;<span class="comment">      0 quickly creates coarse meshes.</span></div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;<span class="comment">      1 creates accurate meshes but takes lots of time.</span></div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;  <span class="keywordtype">void</span> Set(</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    <span class="keywordtype">double</span> density,</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    <span class="keywordtype">double</span> min_edge_length = 0.0001</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    );</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160; </div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;<span class="comment">    Sets the meshing parameters to ON_MeshParameters::FastRenderMesh.</span></div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;  ON_DEPRECATED</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;  <span class="keywordtype">void</span> JaggedAndFasterMeshParameters();</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160; </div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;<span class="comment">    Sets the meshing parameters to ON_MeshParameters::QualityRenderMesh.</span></div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;  ON_DEPRECATED</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;  <span class="keywordtype">void</span> SmoothAndSlowerMeshParameters();</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160; </div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="comment">    Sets the meshing parameters to create the default</span></div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;<span class="comment">    analysis mesh.</span></div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;  <span class="keywordtype">void</span> DefaultAnalysisMeshParameters();</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160; </div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;  <span class="comment">// Compare() ignores weld and curvature settings</span></div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;  <span class="comment">// Ignores m_min_tolerance setting.</span></div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;  <span class="keywordtype">int</span> Compare( <span class="keyword">const</span> <a class="code" href="class_o_n___mesh_parameters.html">ON_MeshParameters</a>&amp; ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160; </div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<span class="comment">    Compares all meshing parameters that control mesh geometry.</span></div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;<span class="comment">    Does not compare m_bCustomSettings, m_bComputeCurvature, </span></div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;<span class="comment">    m_bDoublePrecision, m_min_tolerance, and m_texture_range.</span></div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;  <span class="keywordtype">int</span> CompareGeometrySettings( <span class="keyword">const</span> <a class="code" href="class_o_n___mesh_parameters.html">ON_MeshParameters</a>&amp; ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160; </div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160; </div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;  <span class="keywordtype">bool</span> Write( <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;  <span class="keywordtype">bool</span> Read( <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; );</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;  ON__UINT32 DataCRC(ON__UINT32) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160; </div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160; </div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;  <span class="comment">// Meshing happens in two stages.  The first stage creates a</span></div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;  <span class="comment">// rectangular grid.  The second stage refines the grid until</span></div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;  <span class="comment">// the mesh meets all meshing requirements.  The third stage</span></div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;  <span class="comment">// combines coincident vertices if the resulting mesh is a composite.</span></div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;  </div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;  <span class="keywordtype">bool</span> m_bCustomSettings;    <span class="comment">// false - if these settings were used to create</span></div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;                             <span class="comment">//         a mesh and the app settings don&#39;t match,</span></div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;                             <span class="comment">//         then remesh the object using the app</span></div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;                             <span class="comment">//         settings.</span></div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;                             <span class="comment">// true  - these settings are customized for a</span></div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;                             <span class="comment">//         particular object - ignore app mesh</span></div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;                             <span class="comment">//         settings.</span></div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160; </div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;  <span class="keywordtype">bool</span> m_bComputeCurvature;  <span class="comment">// false - (default) - ON_Mesh::m_K[] not computed</span></div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;                             <span class="comment">// true  - ON_Mesh::m_K[] computed</span></div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160; </div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;  <span class="keywordtype">bool</span> m_bSimplePlanes;      <span class="comment">// false - (default) planar surfaces are meshed</span></div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;                             <span class="comment">//          using the controls below.</span></div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;                             <span class="comment">// true   - planar surfaces are meshed using</span></div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;                             <span class="comment">//          minimal number of triangles and</span></div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;                             <span class="comment">//          aspect/edge controls are ignored.</span></div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160; </div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;  <span class="keywordtype">bool</span> m_bRefine;            <span class="comment">// false - skip stage 2</span></div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;                             <span class="comment">// true  - (default) do stage 2</span></div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160; </div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;  <span class="keywordtype">bool</span> m_bJaggedSeams;       <span class="comment">// false - (default) edges of meshes of joined </span></div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;                             <span class="comment">//          b-rep faces match with no gaps or</span></div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;                             <span class="comment">//          &quot;T&quot; joints.</span></div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;                             <span class="comment">// true   - faces in b-reps are meshed independently.</span></div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;                             <span class="comment">//          This is faster but results in gaps and</span></div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;                             <span class="comment">//          &quot;T&quot; joints along seams between faces.</span></div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160; </div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;  <span class="keywordtype">bool</span> m_bDoublePrecision;   <span class="comment">// false - (default) the mesh vertices will be </span></div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;                             <span class="comment">//         float precision values in the m_V[] array.</span></div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;                             <span class="comment">// true -  The mesh vertices will be double precision</span></div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;                             <span class="comment">//         values in the DoublePrecisionVertices()</span></div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;                             <span class="comment">//         array.  Float precision values will also</span></div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;                             <span class="comment">//         be returned in the m_V[] array.</span></div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;  <span class="keywordtype">bool</span> m_bCustomSettingsEnabled; <span class="comment">// false - if these settings should be ignored</span></div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;                             <span class="comment">//         when used as per object custom render mesh </span></div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;                             <span class="comment">//         settings.</span></div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;                             <span class="comment">//  true - ignore these settings.</span></div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> m_mesher;    <span class="comment">// 0 = slow mesher, 1 = fast mesher</span></div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;    </div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;  <span class="keywordtype">int</span> m_texture_range;       <span class="comment">// 1: normalized</span></div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;                             <span class="comment">//</span></div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;                             <span class="comment">//          each face has a normalized texture range </span></div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;                             <span class="comment">//          [0,1]x[0,1].</span></div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;                             <span class="comment">//</span></div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;                             <span class="comment">// 2: packed normalized (default)</span></div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;                             <span class="comment">//</span></div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;                             <span class="comment">//          each face in a polysurface is assigned</span></div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;                             <span class="comment">//          a texture range that is a subrectangle </span></div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;                             <span class="comment">//          of [0,1]x[0,1].  The subrectangles are </span></div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;                             <span class="comment">//          mutually disjoint and packed into</span></div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;                             <span class="comment">//          into [0,1]x[0,1] in a way that minimizes</span></div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;                             <span class="comment">//          distortion and maximizes the coverage</span></div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;                             <span class="comment">//          of [0,1]x[0,1].  (This texture style </span></div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;                             <span class="comment">//          is suitable for creating texture maps </span></div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;                             <span class="comment">//          with popular 3D painting programs.)</span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160; </div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> m_reserved2;</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;                           </div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;  <span class="comment">// These controls are used in both stages</span></div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160; </div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;  <span class="keywordtype">double</span> m_tolerance; <span class="comment">// maximum distance from center of edge to surface</span></div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160; </div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;        </div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;  <span class="keywordtype">double</span> m_relative_tolerance; <span class="comment">// If 0 &lt; m_relative_tolerance &lt; 1, </span></div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;  <span class="keywordtype">double</span> m_min_tolerance;      <span class="comment">// then the maximum distance from the</span></div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;                               <span class="comment">// center of an edge to the surface will</span></div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;                               <span class="comment">// be &lt;= T, where T is the larger of</span></div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;                               <span class="comment">// (m_min_tolerance,d*m_relative_tolerance), </span></div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;                               <span class="comment">// where d is an esimate of the size of the</span></div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;                               <span class="comment">// object being meshed.</span></div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160; </div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160; </div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;  <span class="keywordtype">double</span> m_min_edge_length; <span class="comment">// edges shorter than m_min_edge_length will</span></div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;                            <span class="comment">// not be split even if the do not meet other</span></div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;                            <span class="comment">// meshing requirements</span></div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160; </div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;  <span class="keywordtype">double</span> m_max_edge_length; <span class="comment">// edges longer than m_max_edge_length will</span></div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;                            <span class="comment">// be split even when they meet all other</span></div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;                            <span class="comment">// meshing requirements</span></div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160; </div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;  <span class="comment">// These controls are used during stage 1 to generate the grid</span></div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;  <span class="keywordtype">double</span> m_grid_aspect_ratio;  <span class="comment">// desired aspect ratio of quads in grid</span></div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;                               <span class="comment">// 0.0 = any aspect ratio is acceptable</span></div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;                               <span class="comment">// values &gt;0 and &lt; sqrt(2) are treated as sqrt(2)</span></div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;  <span class="keywordtype">int</span>    m_grid_min_count;     <span class="comment">// minimum number of quads in initial grid</span></div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;  <span class="keywordtype">int</span>    m_grid_max_count;     <span class="comment">// desired masimum number of quads in initial grid</span></div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;  <span class="keywordtype">double</span> m_grid_angle;         <span class="comment">// (in radians) maximum angle between surface</span></div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;                               <span class="comment">// normal evaluated at adjacent vertices.</span></div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;                               <span class="comment">// 0.0 is treated as pi.</span></div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;  <span class="keywordtype">double</span> m_grid_amplification; <span class="comment">// The parameters above generate a grid.</span></div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;                               <span class="comment">// If you want fewer quads, set m_grid_amplification</span></div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;                               <span class="comment">// to a value &lt; 1.  If you want more quads,</span></div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;                               <span class="comment">// set m_grid_amplification to a value &gt; 1.</span></div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;                               <span class="comment">// default = 1 and values &lt;= 0 are treated as 1.</span></div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160; </div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;  <span class="comment">// These controls are used during stage 2 to refine the grid</span></div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;  <span class="keywordtype">double</span> m_refine_angle;       <span class="comment">// (in radians) maximum angle in radians between</span></div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;                               <span class="comment">// surface normal evaluated at adjacent vertices.</span></div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160; </div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;  <span class="comment">// These controls are used during stage 3</span></div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;  <span class="keywordtype">int</span>     m_face_type;         <span class="comment">// 0 = mixed triangle and quads</span></div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;                               <span class="comment">// 1 = all triangles</span></div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;                               <span class="comment">// 2 = all quads</span></div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> m_reserved3;</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;};</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160; </div>
<div class="line"><a name="l00272"></a><span class="lineno"><a class="line" href="class_o_n___mesh_curvature_stats.html">  272</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___mesh_curvature_stats.html">ON_MeshCurvatureStats</a></div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;{</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;  <a class="code" href="class_o_n___mesh_curvature_stats.html">ON_MeshCurvatureStats</a>();</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;  ~<a class="code" href="class_o_n___mesh_curvature_stats.html">ON_MeshCurvatureStats</a>();</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;  <a class="code" href="class_o_n___mesh_curvature_stats.html">ON_MeshCurvatureStats</a>(<span class="keyword">const</span> <a class="code" href="class_o_n___mesh_curvature_stats.html">ON_MeshCurvatureStats</a>&amp; );</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;  <a class="code" href="class_o_n___mesh_curvature_stats.html">ON_MeshCurvatureStats</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="class_o_n___mesh_curvature_stats.html">ON_MeshCurvatureStats</a>&amp;);</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160; </div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;  <span class="keywordtype">void</span> Destroy();</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;  <span class="keywordtype">void</span> EmergencyDestroy();</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;  </div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;  <span class="keywordtype">bool</span> Set( ON::curvature_style,</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;            <span class="keywordtype">int</span>,           <span class="comment">// Kcount,</span></div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;            <span class="keyword">const</span> <a class="code" href="class_o_n___surface_curvature.html">ON_SurfaceCurvature</a>*, <span class="comment">// K[]</span></div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;            <span class="keyword">const</span> <a class="code" href="class_o_n__3f_vector.html">ON_3fVector</a>*, <span class="comment">// N[] surface normals needed for normal sectional curvatures</span></div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;            <span class="keywordtype">double</span> = 0.0   <span class="comment">// if &gt; 0, value is used for &quot;infinity&quot;</span></div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;            );</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160; </div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;  <span class="keywordtype">bool</span> Write( <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;  <span class="keywordtype">bool</span> Read( <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; );</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160; </div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;  ON::curvature_style m_style;</div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;  </div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;  <span class="keywordtype">double</span> m_infinity; <span class="comment">// curvature values &gt;= this are considered infinite</span></div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;                     <span class="comment">// and not used to compute the m_average or m_adev</span></div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;  <span class="keywordtype">int</span>    m_count_infinite; <span class="comment">// number of &quot;infinte&quot; values</span></div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;  <span class="keywordtype">int</span>    m_count;    <span class="comment">// count of &quot;finite&quot; values</span></div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;  <span class="keywordtype">double</span> m_mode;     <span class="comment">// mode of &quot;finite&quot; values</span></div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;  <span class="keywordtype">double</span> m_average;  <span class="comment">// average of &quot;finite&quot; values</span></div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;  <span class="keywordtype">double</span> m_adev;     <span class="comment">// average deviation of &quot;finite&quot; values</span></div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160; </div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;  <a class="code" href="class_o_n___interval.html">ON_Interval</a> m_range;</div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;};</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160; </div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;<span class="comment">// Class  ON_MeshTopology</span></div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160; </div>
<div class="line"><a name="l00311"></a><span class="lineno"><a class="line" href="struct_o_n___mesh_topology_vertex.html">  311</a></span>&#160;<span class="keyword">struct </span><a class="code" href="struct_o_n___mesh_topology_vertex.html">ON_MeshTopologyVertex</a></div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;{</div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;  <span class="comment">// m_tope_count = number of topological edges that begin or </span></div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;  <span class="comment">// end at this topological vertex.</span></div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;  <span class="keywordtype">int</span> m_tope_count;</div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160; </div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;  <span class="comment">// m_topei[] is an array of length m_tope_count with the indices </span></div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;  <span class="comment">// of the topological edges that begin or end at this topological</span></div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;  <span class="comment">// vertex.  Generally, these edges are listed in no particular</span></div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;  <span class="comment">// order.  If you want the edges listed &quot;radially&quot;, then call</span></div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;  <span class="comment">// ON_MeshTopology::SortVertexEdges.</span></div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;  <span class="keyword">const</span> <span class="keywordtype">int</span>* m_topei;</div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160; </div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;  <span class="comment">// m_v_count = number of ON_Mesh vertices that correspond to </span></div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;  <span class="comment">// this topological vertex.</span></div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;  <span class="keywordtype">int</span> m_v_count;</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160; </div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;  <span class="comment">// m_vi[] is an array of length m_v_count with the indices of the</span></div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;  <span class="comment">// ON_Mesh vertices that correspond to this topological vertex.</span></div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;  <span class="keyword">const</span> <span class="keywordtype">int</span>* m_vi;</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;};</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160; </div>
<div class="line"><a name="l00333"></a><span class="lineno"><a class="line" href="struct_o_n___mesh_topology_edge.html">  333</a></span>&#160;<span class="keyword">struct </span><a class="code" href="struct_o_n___mesh_topology_edge.html">ON_MeshTopologyEdge</a></div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;{</div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;  <span class="comment">// m_topvi[] = indices of the topological verteices where the </span></div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;  <span class="comment">// edge begins and ends.</span></div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;  <span class="keywordtype">int</span> m_topvi[2];</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160; </div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;  <span class="comment">// m_topf_count = number of topological faces tat share this topological edge</span></div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;  <span class="keywordtype">int</span> m_topf_count;</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160; </div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;  <span class="comment">// m_topfi[] is an array of length m_topf_count with the indices of the</span></div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;  <span class="comment">// topological faces that share this topological edge.</span></div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;  <span class="keyword">const</span> <span class="keywordtype">int</span>* m_topfi;</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;};</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160; </div>
<div class="line"><a name="l00347"></a><span class="lineno"><a class="line" href="struct_o_n___mesh_topology_face.html">  347</a></span>&#160;<span class="keyword">struct </span>ON_CLASS <a class="code" href="struct_o_n___mesh_topology_face.html">ON_MeshTopologyFace</a></div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;{</div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;<span class="comment">    m_topei[] = indices of the topological edges that bound the face.</span></div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;<span class="comment">    If m_topei[2] = m_topei[3], then the face is a triangle, otherwise</span></div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;<span class="comment">    the face is a quad.</span></div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;<span class="comment"> </span></div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;<span class="comment">    NOTE WELL:</span></div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;<span class="comment">      The topological edge with index m_topei[k] ENDS at the</span></div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;<span class="comment">      vertex corresponding to ON_MeshFace.vi[k]. So, ...</span></div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;<span class="comment">      If the face is a quad, (ON_MeshFace.vi[2]!=ON_MeshFace.vi[3]),</span></div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;<span class="comment">      the topological edge with index m_topei[0] STARTS at</span></div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;<span class="comment">      ON_MeshFace.vi[3] and ENDS at ON_MeshFace.vi[0],</span></div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;<span class="comment">      the topological edge with index m_topei[1] STARTS at</span></div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;<span class="comment">      ON_MeshFace.vi[0] and ENDS at ON_MeshFace.vi[1],</span></div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;<span class="comment">      the topological edge with index m_topei[2] STARTS at</span></div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;<span class="comment">      ON_MeshFace.vi[1] and ENDS at ON_MeshFace.vi[2], and</span></div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;<span class="comment">      the topological edge with index m_topei[3] STARTS at</span></div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;<span class="comment">      ON_MeshFace.vi[0] and ENDS at ON_MeshFace.vi[1],</span></div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;<span class="comment">      </span></div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;<span class="comment">      If the face is a triangle, (ON_MeshFace.vi[2]==ON_MeshFace.vi[3]),</span></div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;<span class="comment">      the topological edge with index m_topei[0] STARTS at</span></div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;<span class="comment">      ON_MeshFace.vi[2] and ENDS at ON_MeshFace.vi[0],</span></div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;<span class="comment">      the topological edge with index m_topei[1] STARTS at</span></div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;<span class="comment">      ON_MeshFace.vi[0] and ENDS at ON_MeshFace.vi[1],</span></div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;<span class="comment">      the topological edge with index m_topei[2] STARTS at</span></div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;<span class="comment">      ON_MeshFace.vi[1] and ENDS at ON_MeshFace.vi[2].</span></div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;  <span class="keywordtype">int</span> m_topei[4];</div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160; </div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;<span class="comment">    If m_reve[i] is 0, then the orientation of the edge matches the</span></div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;<span class="comment">    orientation of the face.  If m_reve[i] is 1, then the orientation</span></div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;<span class="comment">    of the edge is opposite that of the face.</span></div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;  <span class="keywordtype">char</span> m_reve[4];</div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160; </div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;<span class="comment">    A topological mesh face is a valid triangle if m_topei[0], </span></div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;<span class="comment">    m_topei[1], m_topei[2] are distinct edges and </span></div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;<span class="comment">    m_topei[3]=m_topei[2].</span></div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;<span class="comment">    True if face is a triangle.</span></div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;  <span class="keywordtype">bool</span> IsTriangle() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160; </div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;<span class="comment">    A topological mesh face is a valid quad if m_topei[0], </span></div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;<span class="comment">    m_topei[1], m_topei[2], and m_topei[3] are distinct edges.</span></div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;<span class="comment">    True if face is a quad.</span></div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;  <span class="keywordtype">bool</span> IsQuad() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160; </div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;<span class="comment">    A topological mesh face is valid if m_topei[0], m_topei[1], </span></div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;<span class="comment">    and m_topei[2] are mutually distinct, and m_topei[3] is </span></div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;<span class="comment">    either equal to m_topei[2] or mutually distinct from the</span></div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;<span class="comment">    first three indices.</span></div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;<span class="comment">    True if face is valid.</span></div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;  <span class="keywordtype">bool</span> IsValid( ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;};</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160; </div>
<div class="line"><a name="l00416"></a><span class="lineno"><a class="line" href="class_o_n___mesh_face.html">  416</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___mesh_face.html">ON_MeshFace</a></div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;{</div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;  <span class="keywordtype">int</span> vi[4]; <span class="comment">// vertex index - vi[2]==vi[3] for tirangles</span></div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160; </div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;<span class="comment">    True if vi[2] == vi[3];</span></div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;<span class="comment">    Assumes the face is valid.</span></div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;  <span class="keywordtype">bool</span> IsTriangle() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160; </div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;<span class="comment">    True if vi[2] != vi[3];</span></div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;<span class="comment">    Assumes the face is valid.</span></div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;  <span class="keywordtype">bool</span> IsQuad() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160; </div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;<span class="comment">    Determine if a face is valid by checking that the vertices</span></div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;<span class="comment">    are distinct.</span></div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;<span class="comment">    mesh_vertex_count - [in]</span></div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;<span class="comment">      number of vertices in the mesh</span></div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;<span class="comment">    V - [in]</span></div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;<span class="comment">      optional array of mesh_vertex_count vertex locations.</span></div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;<span class="comment">    true</span></div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;<span class="comment">      The face is valid.</span></div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;<span class="comment">    false</span></div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;<span class="comment">      The face is not valid. It may be possible to repair the</span></div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;<span class="comment">      face by calling ON_MeshFace::Repair().</span></div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;  <span class="keywordtype">bool</span> IsValid( </div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;        <span class="keywordtype">int</span> mesh_vertex_count</div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;  <span class="keywordtype">bool</span> IsValid(</div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;        <span class="keywordtype">int</span> mesh_vertex_count,</div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n__3f_point.html">ON_3fPoint</a>* V</div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;  <span class="keywordtype">bool</span> IsValid(</div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;        <span class="keywordtype">int</span> mesh_vertex_count,</div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>* V</div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;        ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160; </div>
<div class="line"><a name="l00465"></a><span class="lineno">  465</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;<span class="comment">    Reverses the order of the vertices in v[].</span></div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;<span class="comment">    vi[0] is not changed.</span></div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;  <span class="keywordtype">void</span> Flip();</div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160; </div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;<span class="comment">    If IsValid() returns false, then you can use Repair()</span></div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;<span class="comment">    to attempt to create a valid triangle. </span></div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;<span class="comment">    mesh_vertex_count - [in]</span></div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;<span class="comment">      number of vertices in the mesh</span></div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;<span class="comment">    V - [in]</span></div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;<span class="comment">      optional array of mesh_vertex_count vertex locations.</span></div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;<span class="comment">    true</span></div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;<span class="comment">     repair was successful and v[0], v[1], vi[2] have distinct valid</span></div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;<span class="comment">     values and v[2] == v[3].</span></div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;<span class="comment">    false</span></div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;<span class="comment">     this face&#39;s vi[] values cannot be repaired    </span></div>
<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00488"></a><span class="lineno">  488</span>&#160;  <span class="keywordtype">bool</span> Repair(</div>
<div class="line"><a name="l00489"></a><span class="lineno">  489</span>&#160;        <span class="keywordtype">int</span> mesh_vertex_count</div>
<div class="line"><a name="l00490"></a><span class="lineno">  490</span>&#160;        );</div>
<div class="line"><a name="l00491"></a><span class="lineno">  491</span>&#160;  <span class="keywordtype">bool</span> Repair(</div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;        <span class="keywordtype">int</span> mesh_vertex_count,</div>
<div class="line"><a name="l00493"></a><span class="lineno">  493</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n__3f_point.html">ON_3fPoint</a>* V</div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;        );</div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;  <span class="keywordtype">bool</span> Repair(</div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;        <span class="keywordtype">int</span> mesh_vertex_count,</div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>* V</div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;        );</div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160; </div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;<span class="comment">    Compute the face normal</span></div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;<span class="comment">    dV - [in] double precision vertex array for the mesh</span></div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;<span class="comment">    fV - [in] float precision vertex array for the mesh</span></div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;<span class="comment">    FN - [out] face normal</span></div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;<span class="comment">    true if FN is valid.</span></div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;  <span class="keywordtype">bool</span> ComputeFaceNormal( <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>* dV, <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a>&amp; FN ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;  <span class="keywordtype">bool</span> ComputeFaceNormal( <span class="keyword">const</span> <a class="code" href="class_o_n__3f_point.html">ON_3fPoint</a>* fV, <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a>&amp; FN ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;};</div>
<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160; </div>
<div class="line"><a name="l00514"></a><span class="lineno"><a class="line" href="struct_o_n___mesh_face_side.html">  514</a></span>&#160;<span class="keyword">struct </span><a class="code" href="struct_o_n___mesh_face_side.html">ON_MeshFaceSide</a></div>
<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;{</div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;  <span class="keywordtype">int</span> vi[2]; <span class="comment">// vertex indices</span></div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;  <span class="keywordtype">int</span> fi;    <span class="comment">// mesh m_F[] array face index</span></div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>  side;  <span class="comment">// edge connects mesh m_V[m_F[fi].vi[side]] and m_V[m_F[fi].vi[(side+1)%4]]</span></div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span>  dir;   <span class="comment">// 0 = counterclockwise, 1 = clockwise (reversed)</span></div>
<div class="line"><a name="l00520"></a><span class="lineno">  520</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span> value; <span class="comment">// Set to zero by ON_Mesh::GetFaceSideList(). Can be used as needed.</span></div>
<div class="line"><a name="l00521"></a><span class="lineno">  521</span>&#160;};</div>
<div class="line"><a name="l00522"></a><span class="lineno">  522</span>&#160; </div>
<div class="line"><a name="l00523"></a><span class="lineno">  523</span>&#160; </div>
<div class="line"><a name="l00524"></a><span class="lineno">  524</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00525"></a><span class="lineno">  525</span>&#160;<span class="comment">Description:</span></div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;<span class="comment">  Sort the sides[] array of ON_MeshFaceSide structs in dictionary</span></div>
<div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;<span class="comment">  order by &quot;vi[0]&quot;, &quot;vi[1]&quot;, &quot;fi&quot;, and &quot;side&quot; values.</span></div>
<div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;<span class="comment">Paramters:</span></div>
<div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;<span class="comment">  sides_count - [in]</span></div>
<div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;<span class="comment">    number of elements in the sides[] array.</span></div>
<div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;<span class="comment">  sides - [in/out]</span></div>
<div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;<span class="comment">Remarks:</span></div>
<div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;<span class="comment">  The function is thread safe.</span></div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;ON_DECL</div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;<span class="keywordtype">void</span> ON_SortMeshFaceSidesByVertexIndex( </div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;        <span class="keywordtype">int</span> sides_count, </div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;        <span class="keyword">struct</span> <a class="code" href="struct_o_n___mesh_face_side.html">ON_MeshFaceSide</a>* sides </div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;        );</div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160; </div>
<div class="line"><a name="l00541"></a><span class="lineno"><a class="line" href="struct_o_n___mesh_part.html">  541</a></span>&#160;<span class="keyword">struct </span><a class="code" href="struct_o_n___mesh_part.html">ON_MeshPart</a></div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;{</div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;  <span class="comment">// ON_Mesh faces with indices fi[0] &lt;= i &lt; fi[1] reference</span></div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;  <span class="comment">// vertices with indices vi[0] &lt;= j &lt; vi[1].</span></div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;  <span class="keywordtype">int</span> vi[2]; <span class="comment">// subinterval of mesh m_V[] array</span></div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;  <span class="keywordtype">int</span> fi[2]; <span class="comment">// subinterval of mesh m_F[] array</span></div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;  <span class="keywordtype">int</span> vertex_count;   <span class="comment">// = vi[1] - vi[0];</span></div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;  <span class="keywordtype">int</span> triangle_count; <span class="comment">// tris + 2*quads &gt;= fi[1] - fi[0]</span></div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;};</div>
<div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160; </div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;<span class="preprocessor">#if defined(ON_DLL_TEMPLATE)</span></div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;<span class="comment">// This stuff is here because of a limitation in the way Microsoft</span></div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;<span class="comment">// handles templates and DLLs.  See Microsoft&#39;s knowledge base </span></div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;<span class="comment">// article ID Q168958 for details.</span></div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;<span class="preprocessor">#pragma warning( push )</span></div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;<span class="preprocessor">#pragma warning( disable : 4231 )</span></div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;ON_DLL_TEMPLATE <span class="keyword">template</span> <span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_MeshFace&gt;</a>;</div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;ON_DLL_TEMPLATE <span class="keyword">template</span> <span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_MeshTopologyVertex&gt;</a>;</div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;ON_DLL_TEMPLATE <span class="keyword">template</span> <span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_MeshTopologyEdge&gt;</a>;</div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;ON_DLL_TEMPLATE <span class="keyword">template</span> <span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_MeshTopologyFace&gt;</a>;</div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;ON_DLL_TEMPLATE <span class="keyword">template</span> <span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;struct ON_MeshPart&gt;</a>;</div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;<span class="preprocessor">#pragma warning( pop )</span></div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160; </div>
<div class="line"><a name="l00565"></a><span class="lineno"><a class="line" href="class_o_n___mesh_topology.html">  565</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___mesh_topology.html">ON_MeshTopology</a></div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;{</div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;  <span class="comment">// A mesh topology class is always associated with an ON_Mesh</span></div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;  <span class="comment">// and can be retrieved by calling ON_Mesh::Topology()</span></div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;  <a class="code" href="class_o_n___mesh_topology.html">ON_MeshTopology</a>();</div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;  ~<a class="code" href="class_o_n___mesh_topology.html">ON_MeshTopology</a>();</div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160; </div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;  <span class="keywordtype">bool</span> IsValid() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160; </div>
<div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;  <span class="keywordtype">void</span> Dump( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>&amp; ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160; </div>
<div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;  <span class="comment">// The parent ON_Mesh geometry used to compute this mesh topology.</span></div>
<div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>* m_mesh;</div>
<div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160; </div>
<div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;  <span class="comment">// number of topoligical vertices (&lt;= m_mesh.VertexCount())</span></div>
<div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;  <span class="keywordtype">int</span> TopVertexCount() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160; </div>
<div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;  <span class="comment">// number of topoligical edges</span></div>
<div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;  <span class="keywordtype">int</span> TopEdgeCount() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;  </div>
<div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;  <span class="comment">// number of topoligical faces (same as m_mesh.FaceCount())</span></div>
<div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;  <span class="keywordtype">int</span> TopFaceCount() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160; </div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;<span class="comment">    Get a vertex reference to a mesh vertex index.</span></div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;<span class="comment">    ci - [in] component index with type mesh_vertex or meshtop_vertex.</span></div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;<span class="comment">    a reference to the vertex</span></div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;  <span class="keyword">class </span><a class="code" href="class_o_n___mesh_vertex_ref.html">ON_MeshVertexRef</a> VertexRef(ON_COMPONENT_INDEX ci) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160; </div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;  <span class="keyword">class </span><a class="code" href="class_o_n___mesh_vertex_ref.html">ON_MeshVertexRef</a> VertexRef(<span class="keywordtype">int</span> topv_index) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160; </div>
<div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;<span class="comment">    Get an edge reference.</span></div>
<div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;<span class="comment">    ci - [in] component index with type meshtop_edge.</span></div>
<div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;<span class="comment">    a reference to the edge</span></div>
<div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;  <span class="keyword">class </span><a class="code" href="class_o_n___mesh_edge_ref.html">ON_MeshEdgeRef</a> EdgeRef(ON_COMPONENT_INDEX ci) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160; </div>
<div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;  <span class="keyword">class </span><a class="code" href="class_o_n___mesh_edge_ref.html">ON_MeshEdgeRef</a> EdgeRef(<span class="keywordtype">int</span> tope_index) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160; </div>
<div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160;<span class="comment">    Get a face reference from a mesh face index.</span></div>
<div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;<span class="comment">    ci - [in] component index with type mesh_face.</span></div>
<div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;<span class="comment">    a reference to the face.</span></div>
<div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;<span class="comment">    The OM_Mesh.m_F[] and ON_MeshTopology.m_topf[] arrays</span></div>
<div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160;<span class="comment">    are parallel arrays; corresponding faces have identical</span></div>
<div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;<span class="comment">    indices.</span></div>
<div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;  <span class="keyword">class </span><a class="code" href="class_o_n___mesh_face_ref.html">ON_MeshFaceRef</a> FaceRef(ON_COMPONENT_INDEX ci) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160; </div>
<div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;  <span class="keyword">class </span><a class="code" href="class_o_n___mesh_face_ref.html">ON_MeshFaceRef</a> FaceRef(<span class="keywordtype">int</span> topf_index) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160; </div>
<div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160; </div>
<div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;<span class="comment">    Get the 3d point location of a vertex.</span></div>
<div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;<span class="comment">    topv_index - [in];</span></div>
<div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;<span class="comment">    Location of vertex.</span></div>
<div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;  <a class="code" href="class_o_n__3f_point.html">ON_3fPoint</a> TopVertexPoint(</div>
<div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;    <span class="keywordtype">int</span> topv_index</div>
<div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160; </div>
<div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160;<span class="comment">    Get the 3d line along an edge.</span></div>
<div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;<span class="comment">    tope_index - [in];</span></div>
<div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;<span class="comment">    Line along edge.  If input is not valid,</span></div>
<div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;<span class="comment">    the line.from and to are ON_UNSET_POINT</span></div>
<div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;  <a class="code" href="class_o_n___line.html">ON_Line</a> TopEdgeLine(</div>
<div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;    <span class="keywordtype">int</span> tope_index</div>
<div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160; </div>
<div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;  <span class="comment">// returns index of edge that connects topological vertices</span></div>
<div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;  <span class="comment">// returns -1 if no edge is found.</span></div>
<div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;  <span class="keywordtype">int</span> TopEdge(</div>
<div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;    <span class="keywordtype">int</span> vtopi0,</div>
<div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;    <span class="keywordtype">int</span> vtopi1 <span class="comment">// ON_MeshTopology vertex topology indices</span></div>
<div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160; </div>
<div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;  <span class="comment">// returns ON_MeshTopology vertex topology index of a face</span></div>
<div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160;  <span class="comment">// corner.  The face is triangle iv TopFaceVertex(2) = TopFaceVertex(3)</span></div>
<div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;  <span class="keywordtype">bool</span> GetTopFaceVertices(</div>
<div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160;    <span class="keywordtype">int</span> topfi,    <span class="comment">// ON_MeshTopology face topology index (= ON_Mesh face index)</span></div>
<div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;    <span class="keywordtype">int</span> topvi[4]  <span class="comment">// ON_MeshTopology vertex indices returned here</span></div>
<div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160; </div>
<div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00676"></a><span class="lineno">  676</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00677"></a><span class="lineno">  677</span>&#160;<span class="comment">    Sort the m_topei[] list of a mesh topology vertex so that</span></div>
<div class="line"><a name="l00678"></a><span class="lineno">  678</span>&#160;<span class="comment">    the edges are in radial order.  The &quot;const&quot; is a white</span></div>
<div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160;<span class="comment">    lie to make this function easier to call.</span></div>
<div class="line"><a name="l00680"></a><span class="lineno">  680</span>&#160;<span class="comment">  Parameter:</span></div>
<div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160;<span class="comment">    topvi - [in] index of vertex in m_topv[] array.</span></div>
<div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;<span class="comment">    A nonmanifold edge is treated as a boundary edge with respect</span></div>
<div class="line"><a name="l00684"></a><span class="lineno">  684</span>&#160;<span class="comment">    to sorting.  If any boundary or nonmanifold edges end at the</span></div>
<div class="line"><a name="l00685"></a><span class="lineno">  685</span>&#160;<span class="comment">    vertex, then the first edge will be a boundary or nonmanifold</span></div>
<div class="line"><a name="l00686"></a><span class="lineno">  686</span>&#160;<span class="comment">    edge.</span></div>
<div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00688"></a><span class="lineno">  688</span>&#160;  <span class="keywordtype">bool</span> SortVertexEdges( <span class="keywordtype">int</span> topvi ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160; </div>
<div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00692"></a><span class="lineno">  692</span>&#160;<span class="comment">    Sort the m_topei[] list of every mesh topology vertex so </span></div>
<div class="line"><a name="l00693"></a><span class="lineno">  693</span>&#160;<span class="comment">    that the edges are in radial order.  The &quot;const&quot; is a white</span></div>
<div class="line"><a name="l00694"></a><span class="lineno">  694</span>&#160;<span class="comment">    lie to make this function easier to call.</span></div>
<div class="line"><a name="l00695"></a><span class="lineno">  695</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00696"></a><span class="lineno">  696</span>&#160;<span class="comment">    Same as</span></div>
<div class="line"><a name="l00697"></a><span class="lineno">  697</span>&#160;<span class="comment">    for ( int topvi = 0; topvi &lt; m_topv.Count(); topvi++ )</span></div>
<div class="line"><a name="l00698"></a><span class="lineno">  698</span>&#160;<span class="comment">      SortVertexEdges(topvi);</span></div>
<div class="line"><a name="l00699"></a><span class="lineno">  699</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00700"></a><span class="lineno">  700</span>&#160;  <span class="keywordtype">bool</span> SortVertexEdges() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00701"></a><span class="lineno">  701</span>&#160; </div>
<div class="line"><a name="l00702"></a><span class="lineno">  702</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00703"></a><span class="lineno">  703</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00704"></a><span class="lineno">  704</span>&#160;<span class="comment">    Returns true if the topological vertex is hidden. </span></div>
<div class="line"><a name="l00705"></a><span class="lineno">  705</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00706"></a><span class="lineno">  706</span>&#160;<span class="comment">    topvi - [in] mesh topology vertex index.</span></div>
<div class="line"><a name="l00707"></a><span class="lineno">  707</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00708"></a><span class="lineno">  708</span>&#160;<span class="comment">    True if mesh topology vertex is hidden.</span></div>
<div class="line"><a name="l00709"></a><span class="lineno">  709</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00710"></a><span class="lineno">  710</span>&#160;<span class="comment">    The mesh topology vertex is hidden if and only if</span></div>
<div class="line"><a name="l00711"></a><span class="lineno">  711</span>&#160;<span class="comment">    all the ON_Mesh vertices it represents is hidden.</span></div>
<div class="line"><a name="l00712"></a><span class="lineno">  712</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00713"></a><span class="lineno">  713</span>&#160;  <span class="keywordtype">bool</span> TopVertexIsHidden( <span class="keywordtype">int</span> topvi ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00714"></a><span class="lineno">  714</span>&#160; </div>
<div class="line"><a name="l00715"></a><span class="lineno">  715</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00716"></a><span class="lineno">  716</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00717"></a><span class="lineno">  717</span>&#160;<span class="comment">    Returns true if the topological edge is hidden. </span></div>
<div class="line"><a name="l00718"></a><span class="lineno">  718</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00719"></a><span class="lineno">  719</span>&#160;<span class="comment">    topei - [in] mesh topology edge index.</span></div>
<div class="line"><a name="l00720"></a><span class="lineno">  720</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00721"></a><span class="lineno">  721</span>&#160;<span class="comment">    True if mesh topology edge is hidden.</span></div>
<div class="line"><a name="l00722"></a><span class="lineno">  722</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00723"></a><span class="lineno">  723</span>&#160;<span class="comment">    The mesh topology edge is hidden if and only if</span></div>
<div class="line"><a name="l00724"></a><span class="lineno">  724</span>&#160;<span class="comment">    either of its mesh topology vertices is hidden.</span></div>
<div class="line"><a name="l00725"></a><span class="lineno">  725</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00726"></a><span class="lineno">  726</span>&#160;  <span class="keywordtype">bool</span> TopEdgeIsHidden( <span class="keywordtype">int</span> topei ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00727"></a><span class="lineno">  727</span>&#160; </div>
<div class="line"><a name="l00728"></a><span class="lineno">  728</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00729"></a><span class="lineno">  729</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00730"></a><span class="lineno">  730</span>&#160;<span class="comment">    Returns true if the topological face is hidden. </span></div>
<div class="line"><a name="l00731"></a><span class="lineno">  731</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00732"></a><span class="lineno">  732</span>&#160;<span class="comment">    topfi - [in] mesh topology face index.</span></div>
<div class="line"><a name="l00733"></a><span class="lineno">  733</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00734"></a><span class="lineno">  734</span>&#160;<span class="comment">    True if mesh topology face is hidden.</span></div>
<div class="line"><a name="l00735"></a><span class="lineno">  735</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00736"></a><span class="lineno">  736</span>&#160;<span class="comment">    The mesh topology face is hidden if and only if</span></div>
<div class="line"><a name="l00737"></a><span class="lineno">  737</span>&#160;<span class="comment">    any of its mesh topology edges are hidden.</span></div>
<div class="line"><a name="l00738"></a><span class="lineno">  738</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00739"></a><span class="lineno">  739</span>&#160;  <span class="keywordtype">bool</span> TopFaceIsHidden( <span class="keywordtype">int</span> topfi ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00740"></a><span class="lineno">  740</span>&#160; </div>
<div class="line"><a name="l00742"></a><span class="lineno">  742</span>&#160;  <span class="comment">// m_topv_map[] has length m_mesh.VertexCount() and </span></div>
<div class="line"><a name="l00743"></a><span class="lineno">  743</span>&#160;  <span class="comment">// m_topv[m_topv_map[vi]] is the topological mesh vertex that is assocated</span></div>
<div class="line"><a name="l00744"></a><span class="lineno">  744</span>&#160;  <span class="comment">// the with the mesh vertex m_mesh.m_V[vi].</span></div>
<div class="line"><a name="l00745"></a><span class="lineno">  745</span>&#160;  <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;int&gt;</a> m_topv_map;</div>
<div class="line"><a name="l00746"></a><span class="lineno">  746</span>&#160; </div>
<div class="line"><a name="l00748"></a><span class="lineno">  748</span>&#160;  <span class="comment">// Array of topological mesh vertices.  See the comments in the definition</span></div>
<div class="line"><a name="l00749"></a><span class="lineno">  749</span>&#160;  <span class="comment">// of ON_MeshTopologyVertex for details.</span></div>
<div class="line"><a name="l00750"></a><span class="lineno">  750</span>&#160;  <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_MeshTopologyVertex&gt;</a> m_topv;</div>
<div class="line"><a name="l00751"></a><span class="lineno">  751</span>&#160; </div>
<div class="line"><a name="l00753"></a><span class="lineno">  753</span>&#160;  <span class="comment">// Array of topological mesh edges.  See the comments in the definition</span></div>
<div class="line"><a name="l00754"></a><span class="lineno">  754</span>&#160;  <span class="comment">// of ON_MeshTopologyEdge for details.</span></div>
<div class="line"><a name="l00755"></a><span class="lineno">  755</span>&#160;  <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_MeshTopologyEdge&gt;</a> m_tope;</div>
<div class="line"><a name="l00756"></a><span class="lineno">  756</span>&#160; </div>
<div class="line"><a name="l00758"></a><span class="lineno">  758</span>&#160;  <span class="comment">// Array of topological mesh faces.  The topological face</span></div>
<div class="line"><a name="l00759"></a><span class="lineno">  759</span>&#160;  <span class="comment">// m_topf[fi] corresponds to the mesh face ON_Mesh.m_F[fi].</span></div>
<div class="line"><a name="l00760"></a><span class="lineno">  760</span>&#160;  <span class="comment">// See the comments in the definition of ON_MeshTopologyFace</span></div>
<div class="line"><a name="l00761"></a><span class="lineno">  761</span>&#160;  <span class="comment">// for details. To get the indices of the mesh topology </span></div>
<div class="line"><a name="l00762"></a><span class="lineno">  762</span>&#160;  <span class="comment">// vertices at the face corners use </span></div>
<div class="line"><a name="l00763"></a><span class="lineno">  763</span>&#160;  <span class="comment">// topvi = m_topv_map[m_mesh.m_F[fi].vi[n]]</span></div>
<div class="line"><a name="l00764"></a><span class="lineno">  764</span>&#160;  <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_MeshTopologyFace&gt;</a> m_topf;</div>
<div class="line"><a name="l00765"></a><span class="lineno">  765</span>&#160; </div>
<div class="line"><a name="l00766"></a><span class="lineno">  766</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00767"></a><span class="lineno">  767</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00768"></a><span class="lineno">  768</span>&#160;<span class="comment">    Expert user function for efficiently getting the</span></div>
<div class="line"><a name="l00769"></a><span class="lineno">  769</span>&#160;<span class="comment">    integer arrays used by the ON_MeshTopologyVertex</span></div>
<div class="line"><a name="l00770"></a><span class="lineno">  770</span>&#160;<span class="comment">    and ON_MeshTopologyEdge classes.</span></div>
<div class="line"><a name="l00771"></a><span class="lineno">  771</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00772"></a><span class="lineno">  772</span>&#160;<span class="comment">    count - [in] number of integers in array</span></div>
<div class="line"><a name="l00773"></a><span class="lineno">  773</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00774"></a><span class="lineno">  774</span>&#160;<span class="comment">    pointer to integer array.  The array memory</span></div>
<div class="line"><a name="l00775"></a><span class="lineno">  775</span>&#160;<span class="comment">    will be freed by ~ON_MeshTopology()</span></div>
<div class="line"><a name="l00776"></a><span class="lineno">  776</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00777"></a><span class="lineno">  777</span>&#160;  <span class="keywordtype">int</span>* GetIntArray(<span class="keywordtype">int</span> count);</div>
<div class="line"><a name="l00778"></a><span class="lineno">  778</span>&#160; </div>
<div class="line"><a name="l00779"></a><span class="lineno">  779</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00780"></a><span class="lineno">  780</span>&#160;  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="class_o_n___mesh.html">ON_Mesh</a>;</div>
<div class="line"><a name="l00781"></a><span class="lineno">  781</span>&#160; </div>
<div class="line"><a name="l00782"></a><span class="lineno">  782</span>&#160;  <span class="keywordtype">bool</span> Create();</div>
<div class="line"><a name="l00783"></a><span class="lineno">  783</span>&#160;  <span class="keywordtype">void</span> Destroy();</div>
<div class="line"><a name="l00784"></a><span class="lineno">  784</span>&#160;  <span class="keywordtype">void</span> EmergencyDestroy();</div>
<div class="line"><a name="l00785"></a><span class="lineno">  785</span>&#160; </div>
<div class="line"><a name="l00786"></a><span class="lineno">  786</span>&#160;  <span class="comment">// efficient workspaces for</span></div>
<div class="line"><a name="l00787"></a><span class="lineno"><a class="line" href="struct_o_n___mesh_topology_1_1memchunk.html">  787</a></span>&#160;  <span class="keyword">struct </span><a class="code" href="struct_o_n___mesh_topology_1_1memchunk.html">memchunk</a></div>
<div class="line"><a name="l00788"></a><span class="lineno">  788</span>&#160;  {</div>
<div class="line"><a name="l00789"></a><span class="lineno">  789</span>&#160;    <span class="keyword">struct </span><a class="code" href="struct_o_n___mesh_topology_1_1memchunk.html">memchunk</a>* next;</div>
<div class="line"><a name="l00790"></a><span class="lineno">  790</span>&#160;  } *m_memchunk;</div>
<div class="line"><a name="l00791"></a><span class="lineno">  791</span>&#160; </div>
<div class="line"><a name="l00792"></a><span class="lineno">  792</span>&#160;  <span class="comment">// NOTE: this field is a bool with valid values of 0 and 1.</span></div>
<div class="line"><a name="l00793"></a><span class="lineno">  793</span>&#160;  <span class="keyword">volatile</span> <span class="keywordtype">int</span> m_b32IsValid; <span class="comment">// sizeof(m_bIsValid) must be 4 - it is used in sleep locks.</span></div>
<div class="line"><a name="l00794"></a><span class="lineno">  794</span>&#160;                    <span class="comment">//    0: Not Valid</span></div>
<div class="line"><a name="l00795"></a><span class="lineno">  795</span>&#160;                    <span class="comment">//    1: Valid</span></div>
<div class="line"><a name="l00796"></a><span class="lineno">  796</span>&#160;                    <span class="comment">//   -1: Sleep locked - ON_Mesh::Topology() calculation is in progress</span></div>
<div class="line"><a name="l00797"></a><span class="lineno">  797</span>&#160;  <span class="keywordtype">int</span> WaitUntilReady(<span class="keywordtype">int</span> sleep_value) <span class="keyword">const</span>; <span class="comment">// waits until m_b32IsValid &gt;= 0</span></div>
<div class="line"><a name="l00798"></a><span class="lineno">  798</span>&#160; </div>
<div class="line"><a name="l00799"></a><span class="lineno">  799</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00800"></a><span class="lineno">  800</span>&#160;  <span class="comment">// no implementation</span></div>
<div class="line"><a name="l00801"></a><span class="lineno">  801</span>&#160;  <a class="code" href="class_o_n___mesh_topology.html">ON_MeshTopology</a>(<span class="keyword">const</span> <a class="code" href="class_o_n___mesh_topology.html">ON_MeshTopology</a>&amp;);</div>
<div class="line"><a name="l00802"></a><span class="lineno">  802</span>&#160;  <a class="code" href="class_o_n___mesh_topology.html">ON_MeshTopology</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="class_o_n___mesh_topology.html">ON_MeshTopology</a>&amp;);</div>
<div class="line"><a name="l00803"></a><span class="lineno">  803</span>&#160;};</div>
<div class="line"><a name="l00804"></a><span class="lineno">  804</span>&#160; </div>
<div class="line"><a name="l00805"></a><span class="lineno"><a class="line" href="struct_o_n___mesh_ngon.html">  805</a></span>&#160;<span class="keyword">struct </span><a class="code" href="struct_o_n___mesh_ngon.html">ON_MeshNgon</a></div>
<div class="line"><a name="l00806"></a><span class="lineno">  806</span>&#160;{</div>
<div class="line"><a name="l00807"></a><span class="lineno">  807</span>&#160;  <span class="comment">// Number of N-gon corners (N &gt;= 3)</span></div>
<div class="line"><a name="l00808"></a><span class="lineno">  808</span>&#160;  <span class="keywordtype">int</span> N;</div>
<div class="line"><a name="l00809"></a><span class="lineno">  809</span>&#160; </div>
<div class="line"><a name="l00810"></a><span class="lineno">  810</span>&#160;  <span class="comment">// N-gon vertex indices</span></div>
<div class="line"><a name="l00811"></a><span class="lineno">  811</span>&#160;  <span class="comment">// An array of N indices into the mesh&#39;s m_V[] vertex array.</span></div>
<div class="line"><a name="l00812"></a><span class="lineno">  812</span>&#160;  <span class="comment">// If the ON_MeshNgon is returned by the ON_MeshNgonList::AddNgon()</span></div>
<div class="line"><a name="l00813"></a><span class="lineno">  813</span>&#160;  <span class="comment">// function, then the memory for vi is managed by the ON_MeshNgonList</span></div>
<div class="line"><a name="l00814"></a><span class="lineno">  814</span>&#160;  <span class="comment">// class.  </span></div>
<div class="line"><a name="l00815"></a><span class="lineno">  815</span>&#160;  <span class="keywordtype">int</span>* vi;</div>
<div class="line"><a name="l00816"></a><span class="lineno">  816</span>&#160; </div>
<div class="line"><a name="l00817"></a><span class="lineno">  817</span>&#160;  <span class="comment">// N-gon face indices</span></div>
<div class="line"><a name="l00818"></a><span class="lineno">  818</span>&#160;  <span class="comment">// An array of N indices into the mesh&#39;s m_F[] face array.</span></div>
<div class="line"><a name="l00819"></a><span class="lineno">  819</span>&#160;  <span class="comment">// Often, only N-2 indices are used. Unused indices are set to -1.</span></div>
<div class="line"><a name="l00820"></a><span class="lineno">  820</span>&#160;  <span class="comment">// If the ON_MeshNgon is returned by the ON_MeshNgonList::AddNgon()</span></div>
<div class="line"><a name="l00821"></a><span class="lineno">  821</span>&#160;  <span class="comment">// function, then the memory for fi is managed by the ON_MeshNgonList</span></div>
<div class="line"><a name="l00822"></a><span class="lineno">  822</span>&#160;  <span class="comment">// class.  </span></div>
<div class="line"><a name="l00823"></a><span class="lineno">  823</span>&#160;  <span class="keywordtype">int</span>* fi;</div>
<div class="line"><a name="l00824"></a><span class="lineno">  824</span>&#160;};</div>
<div class="line"><a name="l00825"></a><span class="lineno">  825</span>&#160; </div>
<div class="line"><a name="l00826"></a><span class="lineno"><a class="line" href="class_o_n___mesh_ngon_list.html">  826</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___mesh_ngon_list.html">ON_MeshNgonList</a></div>
<div class="line"><a name="l00827"></a><span class="lineno">  827</span>&#160;{</div>
<div class="line"><a name="l00828"></a><span class="lineno">  828</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00829"></a><span class="lineno">  829</span>&#160;  <a class="code" href="class_o_n___mesh_ngon_list.html">ON_MeshNgonList</a>();</div>
<div class="line"><a name="l00830"></a><span class="lineno">  830</span>&#160;  ~<a class="code" href="class_o_n___mesh_ngon_list.html">ON_MeshNgonList</a>();</div>
<div class="line"><a name="l00831"></a><span class="lineno">  831</span>&#160;  <a class="code" href="class_o_n___mesh_ngon_list.html">ON_MeshNgonList</a>(<span class="keyword">const</span> <a class="code" href="class_o_n___mesh_ngon_list.html">ON_MeshNgonList</a>&amp;);</div>
<div class="line"><a name="l00832"></a><span class="lineno">  832</span>&#160;  <a class="code" href="class_o_n___mesh_ngon_list.html">ON_MeshNgonList</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="class_o_n___mesh_ngon_list.html">ON_MeshNgonList</a>&amp;);</div>
<div class="line"><a name="l00833"></a><span class="lineno">  833</span>&#160; </div>
<div class="line"><a name="l00834"></a><span class="lineno">  834</span>&#160; </div>
<div class="line"><a name="l00835"></a><span class="lineno">  835</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00836"></a><span class="lineno">  836</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00837"></a><span class="lineno">  837</span>&#160;<span class="comment">    Add an N-gon to the list</span></div>
<div class="line"><a name="l00838"></a><span class="lineno">  838</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00839"></a><span class="lineno">  839</span>&#160;<span class="comment">    N - [in] number of vertices ( &gt;= 5)</span></div>
<div class="line"><a name="l00840"></a><span class="lineno">  840</span>&#160;<span class="comment">    vi - [in] array of N vertex indices into the mesh&#39;s m_V[] array.</span></div>
<div class="line"><a name="l00841"></a><span class="lineno">  841</span>&#160;<span class="comment">    fi - [in] array of N face indices into the mesh&#39;s m_F[] array.</span></div>
<div class="line"><a name="l00842"></a><span class="lineno">  842</span>&#160;<span class="comment">              Unused indices are set to -1.  In many cases</span></div>
<div class="line"><a name="l00843"></a><span class="lineno">  843</span>&#160;<span class="comment">              there are N-2 valid indices and these are triangles.</span></div>
<div class="line"><a name="l00844"></a><span class="lineno">  844</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l00845"></a><span class="lineno">  845</span>&#160;<span class="comment">    Adding an N-gon may invalidate any pointers previously</span></div>
<div class="line"><a name="l00846"></a><span class="lineno">  846</span>&#160;<span class="comment">    returned by Ngon.</span></div>
<div class="line"><a name="l00847"></a><span class="lineno">  847</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00848"></a><span class="lineno">  848</span>&#160;  <span class="keywordtype">bool</span> AddNgon(<span class="keywordtype">int</span> N, <span class="keyword">const</span> <span class="keywordtype">int</span>* vi, <span class="keyword">const</span> <span class="keywordtype">int</span>* fi);</div>
<div class="line"><a name="l00849"></a><span class="lineno">  849</span>&#160;  <span class="keyword">struct </span><a class="code" href="struct_o_n___mesh_ngon.html">ON_MeshNgon</a>* AddNgon(<span class="keywordtype">int</span> N);</div>
<div class="line"><a name="l00850"></a><span class="lineno">  850</span>&#160; </div>
<div class="line"><a name="l00851"></a><span class="lineno">  851</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00852"></a><span class="lineno">  852</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00853"></a><span class="lineno">  853</span>&#160;<span class="comment">    Number of Ngons</span></div>
<div class="line"><a name="l00854"></a><span class="lineno">  854</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00855"></a><span class="lineno">  855</span>&#160;  <span class="keywordtype">int</span> NgonCount() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00856"></a><span class="lineno">  856</span>&#160; </div>
<div class="line"><a name="l00857"></a><span class="lineno">  857</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00858"></a><span class="lineno">  858</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l00859"></a><span class="lineno">  859</span>&#160;<span class="comment">    Ngon_index - [in] zero based index</span></div>
<div class="line"><a name="l00860"></a><span class="lineno">  860</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00861"></a><span class="lineno">  861</span>&#160;<span class="comment">    NULL or a pointer to the Ngon</span></div>
<div class="line"><a name="l00862"></a><span class="lineno">  862</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00863"></a><span class="lineno">  863</span>&#160;  <a class="code" href="struct_o_n___mesh_ngon.html">ON_MeshNgon</a>* Ngon(<span class="keywordtype">int</span> Ngon_index) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00864"></a><span class="lineno">  864</span>&#160; </div>
<div class="line"><a name="l00865"></a><span class="lineno">  865</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00866"></a><span class="lineno">  866</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00867"></a><span class="lineno">  867</span>&#160;<span class="comment">    If you know about how many ngons you will need,</span></div>
<div class="line"><a name="l00868"></a><span class="lineno">  868</span>&#160;<span class="comment">    then use the function to reserve space for them.</span></div>
<div class="line"><a name="l00869"></a><span class="lineno">  869</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00870"></a><span class="lineno">  870</span>&#160;  <span class="keywordtype">bool</span> ReserveNgonCapacity(<span class="keywordtype">int</span> capacity);</div>
<div class="line"><a name="l00871"></a><span class="lineno">  871</span>&#160; </div>
<div class="line"><a name="l00872"></a><span class="lineno">  872</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00873"></a><span class="lineno">  873</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00874"></a><span class="lineno">  874</span>&#160;<span class="comment">    Destroy N-gon list</span></div>
<div class="line"><a name="l00875"></a><span class="lineno">  875</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00876"></a><span class="lineno">  876</span>&#160;  <span class="keywordtype">void</span> Destroy();</div>
<div class="line"><a name="l00877"></a><span class="lineno">  877</span>&#160; </div>
<div class="line"><a name="l00878"></a><span class="lineno">  878</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00879"></a><span class="lineno">  879</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00880"></a><span class="lineno">  880</span>&#160;<span class="comment">    Approximate number of bytes used by this class.</span></div>
<div class="line"><a name="l00881"></a><span class="lineno">  881</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00882"></a><span class="lineno">  882</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> SizeOf() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00883"></a><span class="lineno">  883</span>&#160; </div>
<div class="line"><a name="l00884"></a><span class="lineno">  884</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l00885"></a><span class="lineno">  885</span>&#160;  <span class="keywordtype">int</span> m_ngons_count;</div>
<div class="line"><a name="l00886"></a><span class="lineno">  886</span>&#160;  <span class="keywordtype">int</span> m_ngons_capacity;</div>
<div class="line"><a name="l00887"></a><span class="lineno">  887</span>&#160;  <a class="code" href="struct_o_n___mesh_ngon.html">ON_MeshNgon</a>* m_ngons;</div>
<div class="line"><a name="l00888"></a><span class="lineno">  888</span>&#160;  <span class="keyword">struct </span>ON_NGON_MEMBLK* m_memblk_list;</div>
<div class="line"><a name="l00889"></a><span class="lineno">  889</span>&#160;};</div>
<div class="line"><a name="l00890"></a><span class="lineno">  890</span>&#160; </div>
<div class="line"><a name="l00891"></a><span class="lineno"><a class="line" href="class_o_n___mesh_partition.html">  891</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___mesh_partition.html">ON_MeshPartition</a></div>
<div class="line"><a name="l00892"></a><span class="lineno">  892</span>&#160;{</div>
<div class="line"><a name="l00893"></a><span class="lineno">  893</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00894"></a><span class="lineno">  894</span>&#160;  <a class="code" href="class_o_n___mesh_partition.html">ON_MeshPartition</a>();</div>
<div class="line"><a name="l00895"></a><span class="lineno">  895</span>&#160;  ~<a class="code" href="class_o_n___mesh_partition.html">ON_MeshPartition</a>();</div>
<div class="line"><a name="l00896"></a><span class="lineno">  896</span>&#160; </div>
<div class="line"><a name="l00897"></a><span class="lineno">  897</span>&#160;  <span class="comment">// maximum number of vertices in a partition</span></div>
<div class="line"><a name="l00898"></a><span class="lineno">  898</span>&#160;  <span class="keywordtype">int</span> m_partition_max_vertex_count;</div>
<div class="line"><a name="l00899"></a><span class="lineno">  899</span>&#160;  <span class="comment">// maximum number of triangles in a partition (quads count as 2 triangles)</span></div>
<div class="line"><a name="l00900"></a><span class="lineno">  900</span>&#160;  <span class="keywordtype">int</span> m_partition_max_triangle_count;</div>
<div class="line"><a name="l00901"></a><span class="lineno">  901</span>&#160; </div>
<div class="line"><a name="l00902"></a><span class="lineno">  902</span>&#160;  <span class="comment">// Partition i uses </span></div>
<div class="line"><a name="l00903"></a><span class="lineno">  903</span>&#160;  <span class="comment">// vertices m_V[j] where </span></div>
<div class="line"><a name="l00904"></a><span class="lineno">  904</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00905"></a><span class="lineno">  905</span>&#160;  <span class="comment">//   m_part[i].vi[0] &lt;= j &lt; m_part[i].vi[1] </span></div>
<div class="line"><a name="l00906"></a><span class="lineno">  906</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00907"></a><span class="lineno">  907</span>&#160;  <span class="comment">// and uses faces m_F[k] where</span></div>
<div class="line"><a name="l00908"></a><span class="lineno">  908</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00909"></a><span class="lineno">  909</span>&#160;  <span class="comment">//    m_part[i].fi[0] &lt;= k &lt; m_part[i].fi[1]</span></div>
<div class="line"><a name="l00910"></a><span class="lineno">  910</span>&#160;  <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;struct ON_MeshPart&gt;</a> m_part;</div>
<div class="line"><a name="l00911"></a><span class="lineno">  911</span>&#160;};</div>
<div class="line"><a name="l00912"></a><span class="lineno">  912</span>&#160; </div>
<div class="line"><a name="l00913"></a><span class="lineno">  913</span>&#160; </div>
<div class="line"><a name="l00914"></a><span class="lineno">  914</span>&#160; </div>
<div class="line"><a name="l00915"></a><span class="lineno"><a class="line" href="class_o_n___mapping_tag.html">  915</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___mapping_tag.html">ON_MappingTag</a></div>
<div class="line"><a name="l00916"></a><span class="lineno">  916</span>&#160;{</div>
<div class="line"><a name="l00917"></a><span class="lineno">  917</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00918"></a><span class="lineno">  918</span>&#160;  <a class="code" href="class_o_n___mapping_tag.html">ON_MappingTag</a>();</div>
<div class="line"><a name="l00919"></a><span class="lineno">  919</span>&#160;  <span class="keywordtype">void</span> Default();</div>
<div class="line"><a name="l00920"></a><span class="lineno">  920</span>&#160;  <span class="keywordtype">bool</span> Write(<a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp;) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00921"></a><span class="lineno">  921</span>&#160;  <span class="keywordtype">bool</span> Read(<a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp;);</div>
<div class="line"><a name="l00922"></a><span class="lineno">  922</span>&#160;  <span class="keywordtype">void</span> Dump( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>&amp; ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00923"></a><span class="lineno">  923</span>&#160;  <span class="keywordtype">void</span> Transform( <span class="keyword">const</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>&amp; xform );</div>
<div class="line"><a name="l00924"></a><span class="lineno">  924</span>&#160;  <span class="keywordtype">void</span> Set(<span class="keyword">const</span> <a class="code" href="class_o_n___texture_mapping.html">ON_TextureMapping</a>&amp; mapping);</div>
<div class="line"><a name="l00925"></a><span class="lineno">  925</span>&#160; </div>
<div class="line"><a name="l00926"></a><span class="lineno">  926</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00927"></a><span class="lineno">  927</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l00928"></a><span class="lineno">  928</span>&#160;<span class="comment">    Sets the tag to the value the meshes have that</span></div>
<div class="line"><a name="l00929"></a><span class="lineno">  929</span>&#160;<span class="comment">    come out of ON_Brep::CreateMesh().</span></div>
<div class="line"><a name="l00930"></a><span class="lineno">  930</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00931"></a><span class="lineno">  931</span>&#160;  <span class="keywordtype">void</span> SetDefaultSurfaceParameterMappingTag();</div>
<div class="line"><a name="l00932"></a><span class="lineno">  932</span>&#160; </div>
<div class="line"><a name="l00933"></a><span class="lineno">  933</span>&#160;  <span class="keywordtype">int</span> Compare( <span class="keyword">const</span> <a class="code" href="class_o_n___mapping_tag.html">ON_MappingTag</a>&amp; other,</div>
<div class="line"><a name="l00934"></a><span class="lineno">  934</span>&#160;               <span class="keywordtype">bool</span> bCompareId = <span class="keyword">true</span>,</div>
<div class="line"><a name="l00935"></a><span class="lineno">  935</span>&#160;               <span class="keywordtype">bool</span> bCompareCRC = <span class="keyword">true</span>,</div>
<div class="line"><a name="l00936"></a><span class="lineno">  936</span>&#160;               <span class="keywordtype">bool</span> bCompareXform = <span class="keyword">true</span></div>
<div class="line"><a name="l00937"></a><span class="lineno">  937</span>&#160;               ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00938"></a><span class="lineno">  938</span>&#160; </div>
<div class="line"><a name="l00939"></a><span class="lineno">  939</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00940"></a><span class="lineno">  940</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00941"></a><span class="lineno">  941</span>&#160;<span class="comment">    True if the mapping tag is set.</span></div>
<div class="line"><a name="l00942"></a><span class="lineno">  942</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00943"></a><span class="lineno">  943</span>&#160;  <span class="keywordtype">bool</span> IsSet() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00944"></a><span class="lineno">  944</span>&#160; </div>
<div class="line"><a name="l00945"></a><span class="lineno">  945</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l00946"></a><span class="lineno">  946</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l00947"></a><span class="lineno">  947</span>&#160;<span class="comment">    True if the mapping tag is for a mapping with</span></div>
<div class="line"><a name="l00948"></a><span class="lineno">  948</span>&#160;<span class="comment">    type ON_TextureMapping::srfp_mapping with</span></div>
<div class="line"><a name="l00949"></a><span class="lineno">  949</span>&#160;<span class="comment">    m_uvw = identity.</span></div>
<div class="line"><a name="l00950"></a><span class="lineno">  950</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l00951"></a><span class="lineno">  951</span>&#160;  <span class="keywordtype">bool</span> IsDefaultSurfaceParameterMapping() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00952"></a><span class="lineno">  952</span>&#160; </div>
<div class="line"><a name="l00953"></a><span class="lineno">  953</span>&#160;  <span class="comment">// Identifies the mapping used to create the texture </span></div>
<div class="line"><a name="l00954"></a><span class="lineno">  954</span>&#160;  <span class="comment">// coordinates and records transformations applied </span></div>
<div class="line"><a name="l00955"></a><span class="lineno">  955</span>&#160;  <span class="comment">// to the mesh after the texture coordinates were</span></div>
<div class="line"><a name="l00956"></a><span class="lineno">  956</span>&#160;  <span class="comment">// calculated.  If the texture mapping does not</span></div>
<div class="line"><a name="l00957"></a><span class="lineno">  957</span>&#160;  <span class="comment">// change when the mesh is transformed, then set </span></div>
<div class="line"><a name="l00958"></a><span class="lineno">  958</span>&#160;  <span class="comment">// m_mesh_xform to zero so that compares will work right.</span></div>
<div class="line"><a name="l00959"></a><span class="lineno">  959</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l00960"></a><span class="lineno">  960</span>&#160;  <span class="comment">// </span></div>
<div class="line"><a name="l00961"></a><span class="lineno">  961</span>&#160;  <a class="code" href="class_o_n___u_u_i_d.html">ON_UUID</a>                 m_mapping_id;   <span class="comment">// ON_TextureMapping::m_mapping_id</span></div>
<div class="line"><a name="l00962"></a><span class="lineno">  962</span>&#160;  ON_TextureMapping::TYPE m_mapping_type; <span class="comment">// ON_TextureMapping::m_type</span></div>
<div class="line"><a name="l00963"></a><span class="lineno">  963</span>&#160;  ON__UINT32              m_mapping_crc;  <span class="comment">// ON_TextureMapping::MappingCRC()</span></div>
<div class="line"><a name="l00964"></a><span class="lineno">  964</span>&#160;  <a class="code" href="class_o_n___xform.html">ON_Xform</a>                m_mesh_xform;</div>
<div class="line"><a name="l00965"></a><span class="lineno">  965</span>&#160;};</div>
<div class="line"><a name="l00966"></a><span class="lineno">  966</span>&#160; </div>
<div class="line"><a name="l00967"></a><span class="lineno"><a class="line" href="class_o_n___texture_coordinates.html">  967</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___texture_coordinates.html">ON_TextureCoordinates</a></div>
<div class="line"><a name="l00968"></a><span class="lineno">  968</span>&#160;{</div>
<div class="line"><a name="l00969"></a><span class="lineno">  969</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00970"></a><span class="lineno">  970</span>&#160;  <a class="code" href="class_o_n___texture_coordinates.html">ON_TextureCoordinates</a>();</div>
<div class="line"><a name="l00971"></a><span class="lineno">  971</span>&#160; </div>
<div class="line"><a name="l00972"></a><span class="lineno">  972</span>&#160;  <a class="code" href="class_o_n___mapping_tag.html">ON_MappingTag</a>   m_tag;</div>
<div class="line"><a name="l00973"></a><span class="lineno">  973</span>&#160;  <span class="keywordtype">int</span>                        m_dim; <span class="comment">// 1, 2, or 3</span></div>
<div class="line"><a name="l00974"></a><span class="lineno">  974</span>&#160;  <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_3fPoint&gt;</a> m_T;   <span class="comment">// texture coordinates</span></div>
<div class="line"><a name="l00975"></a><span class="lineno">  975</span>&#160;};</div>
<div class="line"><a name="l00976"></a><span class="lineno">  976</span>&#160; </div>
<div class="line"><a name="l00977"></a><span class="lineno">  977</span>&#160; </div>
<div class="line"><a name="l00978"></a><span class="lineno">  978</span>&#160;<span class="preprocessor">#if defined(ON_DLL_TEMPLATE)</span></div>
<div class="line"><a name="l00979"></a><span class="lineno">  979</span>&#160;<span class="comment">// This stuff is here because of a limitation in the way Microsoft</span></div>
<div class="line"><a name="l00980"></a><span class="lineno">  980</span>&#160;<span class="comment">// handles templates and DLLs.  See Microsoft&#39;s knowledge base </span></div>
<div class="line"><a name="l00981"></a><span class="lineno">  981</span>&#160;<span class="comment">// article ID Q168958 for details.</span></div>
<div class="line"><a name="l00982"></a><span class="lineno">  982</span>&#160;<span class="preprocessor">#pragma warning( push )</span></div>
<div class="line"><a name="l00983"></a><span class="lineno">  983</span>&#160;<span class="preprocessor">#pragma warning( disable : 4231 )</span></div>
<div class="line"><a name="l00984"></a><span class="lineno">  984</span>&#160;ON_DLL_TEMPLATE <span class="keyword">template</span> <span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_MappingTag&gt;</a>;</div>
<div class="line"><a name="l00985"></a><span class="lineno">  985</span>&#160;ON_DLL_TEMPLATE <span class="keyword">template</span> <span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___class_array.html">ON_ClassArray&lt;ON_TextureCoordinates&gt;</a>;</div>
<div class="line"><a name="l00986"></a><span class="lineno">  986</span>&#160;<span class="preprocessor">#pragma warning( pop )</span></div>
<div class="line"><a name="l00987"></a><span class="lineno">  987</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00988"></a><span class="lineno">  988</span>&#160; </div>
<div class="line"><a name="l00989"></a><span class="lineno"><a class="line" href="class_o_n___mesh.html">  989</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___mesh.html">ON_Mesh</a> : <span class="keyword">public</span> <a class="code" href="class_o_n___geometry.html">ON_Geometry</a></div>
<div class="line"><a name="l00990"></a><span class="lineno">  990</span>&#160;{</div>
<div class="line"><a name="l00991"></a><span class="lineno">  991</span>&#160;  ON_OBJECT_DECLARE(<a class="code" href="class_o_n___mesh.html">ON_Mesh</a>);</div>
<div class="line"><a name="l00992"></a><span class="lineno">  992</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l00993"></a><span class="lineno">  993</span>&#160;  <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>();</div>
<div class="line"><a name="l00994"></a><span class="lineno">  994</span>&#160;  <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>(</div>
<div class="line"><a name="l00995"></a><span class="lineno">  995</span>&#160;    <span class="keywordtype">int</span>   initial_face_array_capacity,   <span class="comment">// initial face array capacity</span></div>
<div class="line"><a name="l00996"></a><span class="lineno">  996</span>&#160;    <span class="keywordtype">int</span>   initial_vertex_array_capacity, <span class="comment">// initial vertex array capacity</span></div>
<div class="line"><a name="l00997"></a><span class="lineno">  997</span>&#160;    <span class="keywordtype">bool</span>  has_vertex_normals,            <span class="comment">// true if mesh has vertex normals</span></div>
<div class="line"><a name="l00998"></a><span class="lineno">  998</span>&#160;    <span class="keywordtype">bool</span>  has_texture_coordinates        <span class="comment">// true if mesh has texture coordinates</span></div>
<div class="line"><a name="l00999"></a><span class="lineno">  999</span>&#160;    );</div>
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>&#160;  <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>( <span class="keyword">const</span> <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>&amp; );</div>
<div class="line"><a name="l01001"></a><span class="lineno"> 1001</span>&#160;  <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>&amp; operator=( <span class="keyword">const</span> <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>&amp; );</div>
<div class="line"><a name="l01002"></a><span class="lineno"> 1002</span>&#160;  ~<a class="code" href="class_o_n___mesh.html">ON_Mesh</a>();</div>
<div class="line"><a name="l01003"></a><span class="lineno"> 1003</span>&#160; </div>
<div class="line"><a name="l01004"></a><span class="lineno"> 1004</span>&#160;  <span class="comment">// Override of virtual ON_Object::MemoryRelocate</span></div>
<div class="line"><a name="l01005"></a><span class="lineno"> 1005</span>&#160;  <span class="keywordtype">void</span> MemoryRelocate();</div>
<div class="line"><a name="l01006"></a><span class="lineno"> 1006</span>&#160; </div>
<div class="line"><a name="l01007"></a><span class="lineno"> 1007</span>&#160;  <span class="comment">// virtual ON_Object::DestroyRuntimeCache override</span></div>
<div class="line"><a name="l01008"></a><span class="lineno"> 1008</span>&#160;  <span class="keywordtype">void</span> DestroyRuntimeCache( <span class="keywordtype">bool</span> bDelete = <span class="keyword">true</span> );</div>
<div class="line"><a name="l01009"></a><span class="lineno"> 1009</span>&#160; </div>
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span>&#160;  <span class="keywordtype">void</span> Destroy();</div>
<div class="line"><a name="l01011"></a><span class="lineno"> 1011</span>&#160;  <span class="keywordtype">void</span> EmergencyDestroy(); <span class="comment">// Call only when memory used by this class&#39;s</span></div>
<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span>&#160;                           <span class="comment">// members will soon become invalid for reasons </span></div>
<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>&#160;                           <span class="comment">// beyond your control. EmergencyDestroy() zeros</span></div>
<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>&#160;                           <span class="comment">// anything that could possibly cause</span></div>
<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>&#160;                           <span class="comment">// ~ON_Mesh() to crash.  Calling</span></div>
<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>&#160;                           <span class="comment">// EmergencyDestroy() under normal conditions </span></div>
<div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>&#160;                           <span class="comment">// will result in ~ON_Mesh() leaking</span></div>
<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>&#160;                           <span class="comment">// memory.</span></div>
<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>&#160; </div>
<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>&#160;  <span class="keywordtype">void</span> DestroyTree( <span class="keywordtype">bool</span> bDeleteTree = <span class="keyword">true</span> );</div>
<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>&#160; </div>
<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>&#160;  <span class="comment">// ON_Object overrides</span></div>
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>&#160; </div>
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>&#160;  <span class="comment">// virtual ON_Object::SizeOf override</span></div>
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> SizeOf() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>&#160; </div>
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>&#160;  <span class="comment">// virtual ON_Object::DataCRC override</span></div>
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>&#160;  ON__UINT32 DataCRC(ON__UINT32 current_remainder) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>&#160; </div>
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>&#160;<span class="comment">    Tests an object to see if its data members are correctly</span></div>
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>&#160;<span class="comment">    initialized.</span></div>
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>&#160;<span class="comment">    text_log - [in] if the object is not valid and text_log</span></div>
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>&#160;<span class="comment">        is not NULL, then a brief englis description of the</span></div>
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span>&#160;<span class="comment">        reason the object is not valid is appened to the log.</span></div>
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>&#160;<span class="comment">        The information appended to text_log is suitable for </span></div>
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span>&#160;<span class="comment">        low-level debugging purposes by programmers and is </span></div>
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>&#160;<span class="comment">        not intended to be useful as a high level user </span></div>
<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>&#160;<span class="comment">        interface tool.</span></div>
<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>&#160;<span class="comment">    @untitled table</span></div>
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>&#160;<span class="comment">    true     object is valid</span></div>
<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>&#160;<span class="comment">    false    object is invalid, uninitialized, etc.</span></div>
<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>&#160;<span class="comment">    Overrides virtual ON_Object::IsValid</span></div>
<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>&#160;  ON_BOOL32 IsValid( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>* text_log = NULL ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>&#160; </div>
<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>&#160;  <span class="keywordtype">void</span> Dump( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>&amp; ) <span class="keyword">const</span>; <span class="comment">// for debugging</span></div>
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>&#160; </div>
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>&#160;  ON_BOOL32 Write( <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>&#160; </div>
<div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>&#160;  ON_BOOL32 Read( <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; );</div>
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>&#160; </div>
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>&#160;  ON::object_type ObjectType() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>&#160; </div>
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>&#160;  <span class="comment">// ON_Geometry overrides</span></div>
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>&#160; </div>
<div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>&#160;  <span class="keywordtype">int</span> Dimension() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>&#160; </div>
<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>&#160;  ON_BOOL32 GetBBox( <span class="comment">// returns true if successful</span></div>
<div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>&#160;         <span class="keywordtype">double</span>*,    <span class="comment">// minimum</span></div>
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>&#160;         <span class="keywordtype">double</span>*,    <span class="comment">// maximum</span></div>
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>&#160;         ON_BOOL32 = <span class="keyword">false</span>  <span class="comment">// true means grow box</span></div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>&#160;         ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>&#160; </div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>&#160;<span class="comment">    Description:</span></div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>&#160;<span class="comment">    Get tight bounding box of the mesh.</span></div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>&#160;<span class="comment">    Parameters:</span></div>
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>&#160;<span class="comment">        tight_bbox - [in/out] tight bounding box</span></div>
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>&#160;<span class="comment">        bGrowBox -[in]  (default=false)         </span></div>
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>&#160;<span class="comment">      If true and the input tight_bbox is valid, then returned</span></div>
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>&#160;<span class="comment">      tight_bbox is the union of the input tight_bbox and the </span></div>
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>&#160;<span class="comment">      mesh&#39;s tight bounding box.</span></div>
<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>&#160;<span class="comment">        xform -[in] (default=NULL)</span></div>
<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>&#160;<span class="comment">      If not NULL, the tight bounding box of the transformed</span></div>
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span>&#160;<span class="comment">      mesh is calculated.  The mesh is not modified.</span></div>
<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>&#160;<span class="comment">    Returns:</span></div>
<div class="line"><a name="l01084"></a><span class="lineno"> 1084</span>&#160;<span class="comment">    True if the returned tight_bbox is set to a valid </span></div>
<div class="line"><a name="l01085"></a><span class="lineno"> 1085</span>&#160;<span class="comment">    bounding box.</span></div>
<div class="line"><a name="l01086"></a><span class="lineno"> 1086</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span>&#160;    <span class="keywordtype">bool</span> GetTightBoundingBox( </div>
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span>&#160;            <a class="code" href="class_o_n___bounding_box.html">ON_BoundingBox</a>&amp; tight_bbox, </div>
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span>&#160;      <span class="keywordtype">int</span> bGrowBox = <span class="keyword">false</span>,</div>
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>&#160;            <span class="keyword">const</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>* xform = 0</div>
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>&#160;      ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>&#160; </div>
<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>&#160;  ON_BOOL32 Transform( </div>
<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>&#160;         <span class="keyword">const</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>&amp;</div>
<div class="line"><a name="l01095"></a><span class="lineno"> 1095</span>&#160;         );</div>
<div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>&#160; </div>
<div class="line"><a name="l01097"></a><span class="lineno"> 1097</span>&#160;  <span class="comment">// virtual ON_Geometry::IsDeformable() override</span></div>
<div class="line"><a name="l01098"></a><span class="lineno"> 1098</span>&#160;  <span class="keywordtype">bool</span> IsDeformable() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01099"></a><span class="lineno"> 1099</span>&#160; </div>
<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span>&#160;  <span class="comment">// virtual ON_Geometry::MakeDeformable() override</span></div>
<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span>&#160;  <span class="keywordtype">bool</span> MakeDeformable();</div>
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span>&#160; </div>
<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>&#160;  ON_BOOL32 SwapCoordinates(</div>
<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>&#160;        <span class="keywordtype">int</span>, <span class="keywordtype">int</span>        <span class="comment">// indices of coords to swap</span></div>
<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>&#160;        );</div>
<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>&#160; </div>
<div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>&#160;  <span class="comment">// virtual ON_Geometry override</span></div>
<div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>&#160;  <span class="keywordtype">bool</span> EvaluatePoint( <span class="keyword">const</span> <span class="keyword">class</span> <a class="code" href="class_o_n___obj_ref.html">ON_ObjRef</a>&amp; objref, <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; P ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>&#160; </div>
<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>&#160; </div>
<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>&#160;  <span class="comment">// Interface</span></div>
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>&#160;  <span class="comment">// </span></div>
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>&#160; </div>
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>&#160;  <span class="comment">// creation</span></div>
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>&#160;  <span class="keywordtype">bool</span> SetVertex(</div>
<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>&#160;         <span class="keywordtype">int</span>,              <span class="comment">// vertex index</span></div>
<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>&#160;         <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; <span class="comment">// vertex location</span></div>
<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>&#160;         );</div>
<div class="line"><a name="l01120"></a><span class="lineno"> 1120</span>&#160;  <span class="keywordtype">bool</span> SetVertex(</div>
<div class="line"><a name="l01121"></a><span class="lineno"> 1121</span>&#160;         <span class="keywordtype">int</span>,              <span class="comment">// vertex index</span></div>
<div class="line"><a name="l01122"></a><span class="lineno"> 1122</span>&#160;         <span class="keyword">const</span> <a class="code" href="class_o_n__3f_point.html">ON_3fPoint</a>&amp; <span class="comment">// vertex location</span></div>
<div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>&#160;         );</div>
<div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>&#160;  <span class="keywordtype">bool</span> SetVertexNormal(</div>
<div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>&#160;         <span class="keywordtype">int</span>,               <span class="comment">// vertex index</span></div>
<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>&#160;         <span class="keyword">const</span> <a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a>&amp; <span class="comment">// unit normal</span></div>
<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>&#160;         );</div>
<div class="line"><a name="l01128"></a><span class="lineno"> 1128</span>&#160;  <span class="keywordtype">bool</span> SetVertexNormal(</div>
<div class="line"><a name="l01129"></a><span class="lineno"> 1129</span>&#160;         <span class="keywordtype">int</span>,               <span class="comment">// vertex index</span></div>
<div class="line"><a name="l01130"></a><span class="lineno"> 1130</span>&#160;         <span class="keyword">const</span> <a class="code" href="class_o_n__3f_vector.html">ON_3fVector</a>&amp; <span class="comment">// unit normal</span></div>
<div class="line"><a name="l01131"></a><span class="lineno"> 1131</span>&#160;         );</div>
<div class="line"><a name="l01132"></a><span class="lineno"> 1132</span>&#160;  <span class="keywordtype">bool</span> SetTextureCoord(</div>
<div class="line"><a name="l01133"></a><span class="lineno"> 1133</span>&#160;         <span class="keywordtype">int</span>,               <span class="comment">// vertex index</span></div>
<div class="line"><a name="l01134"></a><span class="lineno"> 1134</span>&#160;         <span class="keywordtype">double</span>, <span class="keywordtype">double</span>     <span class="comment">// texture coordinates</span></div>
<div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>&#160;         );</div>
<div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>&#160;  <span class="keywordtype">bool</span> SetTriangle(</div>
<div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>&#160;         <span class="keywordtype">int</span>, <span class="comment">// face index</span></div>
<div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>&#160;         <span class="keywordtype">int</span>,<span class="keywordtype">int</span>,<span class="keywordtype">int</span> <span class="comment">// vertex indices</span></div>
<div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>&#160;         );</div>
<div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>&#160;  <span class="keywordtype">bool</span> SetQuad(</div>
<div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>&#160;         <span class="keywordtype">int</span>, <span class="comment">// face index</span></div>
<div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>&#160;         <span class="keywordtype">int</span>,<span class="keywordtype">int</span>,<span class="keywordtype">int</span>,<span class="keywordtype">int</span> <span class="comment">// vertex indices</span></div>
<div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>&#160;         );</div>
<div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>&#160; </div>
<div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>&#160;<span class="comment">    Get a vertex reference to a mesh vertex index.</span></div>
<div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>&#160;<span class="comment">    ci - [in] component index with type mesh_vertex or meshtop_vertex.</span></div>
<div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>&#160;<span class="comment">    a reference to the vertex</span></div>
<div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>&#160;  <a class="code" href="class_o_n___mesh_vertex_ref.html">ON_MeshVertexRef</a> VertexRef(ON_COMPONENT_INDEX ci) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>&#160; </div>
<div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>&#160;  <a class="code" href="class_o_n___mesh_vertex_ref.html">ON_MeshVertexRef</a> VertexRef(<span class="keywordtype">int</span> mesh_V_index) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>&#160; </div>
<div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>&#160;<span class="comment">    Get an edge reference from a mesh topology edge index.</span></div>
<div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>&#160;<span class="comment">    ci - [in] component index with type meshtop_edge</span></div>
<div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>&#160;<span class="comment">    a reference to the edge</span></div>
<div class="line"><a name="l01164"></a><span class="lineno"> 1164</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>&#160;  <a class="code" href="class_o_n___mesh_edge_ref.html">ON_MeshEdgeRef</a> EdgeRef(ON_COMPONENT_INDEX ci) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>&#160; </div>
<div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>&#160;  <a class="code" href="class_o_n___mesh_edge_ref.html">ON_MeshEdgeRef</a> EdgeRef(<span class="keywordtype">int</span> tope_index) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>&#160; </div>
<div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>&#160;<span class="comment">    Get a face reference from a mesh face index.</span></div>
<div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01173"></a><span class="lineno"> 1173</span>&#160;<span class="comment">    ci - [in] component index with type mesh_face.</span></div>
<div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>&#160;<span class="comment">    a reference to the face</span></div>
<div class="line"><a name="l01176"></a><span class="lineno"> 1176</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>&#160;  <a class="code" href="class_o_n___mesh_face_ref.html">ON_MeshFaceRef</a> FaceRef(ON_COMPONENT_INDEX ci) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01178"></a><span class="lineno"> 1178</span>&#160; </div>
<div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>&#160;  <a class="code" href="class_o_n___mesh_face_ref.html">ON_MeshFaceRef</a> FaceRef(<span class="keywordtype">int</span> mesh_F_index) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01180"></a><span class="lineno"> 1180</span>&#160; </div>
<div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01183"></a><span class="lineno"> 1183</span>&#160;<span class="comment">   ci - [in] a component index with type mesh_vertex, meshtop_vertex,</span></div>
<div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>&#160;<span class="comment">             meshtop_edge, or mesh_face.</span></div>
<div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>&#160;<span class="comment">    A pointer to an ON_MeshVertexRef, ON_MeshEdgeRef, or ON_MeshFaceRef.</span></div>
<div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>&#160;<span class="comment">    The caller must delete the returned object when it is no longer</span></div>
<div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>&#160;<span class="comment">    needed.</span></div>
<div class="line"><a name="l01189"></a><span class="lineno"> 1189</span>&#160;<span class="comment">  See Also:</span></div>
<div class="line"><a name="l01190"></a><span class="lineno"> 1190</span>&#160;<span class="comment">    ON_Mesh::VertexRef</span></div>
<div class="line"><a name="l01191"></a><span class="lineno"> 1191</span>&#160;<span class="comment">    ON_Mesh::EdgeRef</span></div>
<div class="line"><a name="l01192"></a><span class="lineno"> 1192</span>&#160;<span class="comment">    ON_Mesh::FaceRef</span></div>
<div class="line"><a name="l01193"></a><span class="lineno"> 1193</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01194"></a><span class="lineno"> 1194</span>&#160;  <a class="code" href="class_o_n___geometry.html">ON_Geometry</a>* MeshComponent( </div>
<div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>&#160;      ON_COMPONENT_INDEX ci</div>
<div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>&#160;      ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>&#160; </div>
<div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>&#160;  <span class="comment">// query</span></div>
<div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>&#160;  <span class="keywordtype">int</span> VertexCount() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>&#160;  <span class="keywordtype">int</span> FaceCount() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>&#160;  <span class="keywordtype">int</span> QuadCount() <span class="keyword">const</span>; <span class="comment">// number of faces that are quads</span></div>
<div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>&#160;  <span class="keywordtype">int</span> TriangleCount() <span class="keyword">const</span>; <span class="comment">// number of faces that are triangles</span></div>
<div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>&#160;  <span class="keywordtype">int</span> InvalidFaceCount() <span class="keyword">const</span>; <span class="comment">// number of face that have invalid m_vi[] values.</span></div>
<div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>&#160;  <span class="keywordtype">bool</span> HasVertexNormals() <span class="keyword">const</span>; <span class="comment">// normals at vertices</span></div>
<div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>&#160;  <span class="keywordtype">bool</span> HasFaceNormals() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01206"></a><span class="lineno"> 1206</span>&#160;  <span class="keywordtype">bool</span> HasTextureCoordinates() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>&#160;  <span class="keywordtype">bool</span> HasSurfaceParameters() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01208"></a><span class="lineno"> 1208</span>&#160;  <span class="keywordtype">bool</span> HasPrincipalCurvatures() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>&#160;  <span class="keywordtype">bool</span> HasVertexColors() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>&#160; </div>
<div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>&#160;<span class="comment">    Number of vertices that are hidden.</span></div>
<div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>&#160;  <span class="keywordtype">int</span> HiddenVertexCount() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>&#160; </div>
<div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>&#160;  <span class="keywordtype">bool</span> GetCurvatureStats( </div>
<div class="line"><a name="l01218"></a><span class="lineno"> 1218</span>&#160;         ON::curvature_style, </div>
<div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>&#160;         <a class="code" href="class_o_n___mesh_curvature_stats.html">ON_MeshCurvatureStats</a>&amp; </div>
<div class="line"><a name="l01220"></a><span class="lineno"> 1220</span>&#160;         ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01221"></a><span class="lineno"> 1221</span>&#160; </div>
<div class="line"><a name="l01222"></a><span class="lineno"> 1222</span>&#160;  <span class="keywordtype">void</span> InvalidateVertexBoundingBox(); <span class="comment">// Call if defining geometry is changed by </span></div>
<div class="line"><a name="l01223"></a><span class="lineno"> 1223</span>&#160;                             <span class="comment">// directly manipulating the m_V[] array.</span></div>
<div class="line"><a name="l01224"></a><span class="lineno"> 1224</span>&#160;  <span class="keywordtype">void</span> InvalidateVertexNormalBoundingBox(); <span class="comment">// Call if defining geometry is changed by </span></div>
<div class="line"><a name="l01225"></a><span class="lineno"> 1225</span>&#160;                             <span class="comment">// directly manipulating the m_N[] array.</span></div>
<div class="line"><a name="l01226"></a><span class="lineno"> 1226</span>&#160;  <span class="keywordtype">void</span> InvalidateTextureCoordinateBoundingBox(); <span class="comment">// Call if defining geometry is changed by </span></div>
<div class="line"><a name="l01227"></a><span class="lineno"> 1227</span>&#160;                             <span class="comment">// directly manipulating the m_T[] array.</span></div>
<div class="line"><a name="l01228"></a><span class="lineno"> 1228</span>&#160;  <span class="keywordtype">void</span> InvalidateCurvatureStats(); <span class="comment">// Call if defining geometry is changed by </span></div>
<div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>&#160;                             <span class="comment">// directly manipulating the m_T[] array.</span></div>
<div class="line"><a name="l01230"></a><span class="lineno"> 1230</span>&#160;  <span class="keywordtype">void</span> InvalidateBoundingBoxes(); <span class="comment">// Invalidates all cached bounding box information.</span></div>
<div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>&#160; </div>
<div class="line"><a name="l01232"></a><span class="lineno"> 1232</span>&#160; </div>
<div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>&#160;  <span class="keywordtype">void</span> Flip(); <span class="comment">// reverses face orientations and flips vertex and face normals</span></div>
<div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>&#160; </div>
<div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>&#160;  <span class="keywordtype">void</span> FlipVertexNormals(); <span class="comment">// reverses vertex normals</span></div>
<div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>&#160;  <span class="keywordtype">void</span> FlipFaceNormals(); <span class="comment">// reverses face normals</span></div>
<div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>&#160;  <span class="keywordtype">void</span> FlipFaceOrientation(); <span class="comment">// reverses face orientation (does nothing to normals)</span></div>
<div class="line"><a name="l01238"></a><span class="lineno"> 1238</span>&#160; </div>
<div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>&#160;  <span class="keywordtype">void</span> SetMeshParameters( <span class="keyword">const</span> <a class="code" href="class_o_n___mesh_parameters.html">ON_MeshParameters</a>&amp; );</div>
<div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___mesh_parameters.html">ON_MeshParameters</a>* MeshParameters() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>&#160;  <span class="keywordtype">void</span> DeleteMeshParameters();</div>
<div class="line"><a name="l01242"></a><span class="lineno"> 1242</span>&#160; </div>
<div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>&#160;  </div>
<div class="line"><a name="l01244"></a><span class="lineno"> 1244</span>&#160;  <span class="keywordtype">bool</span> UnitizeVertexNormals();</div>
<div class="line"><a name="l01245"></a><span class="lineno"> 1245</span>&#160;  <span class="keywordtype">bool</span> UnitizeFaceNormals();</div>
<div class="line"><a name="l01246"></a><span class="lineno"> 1246</span>&#160;  <span class="keywordtype">bool</span> CountQuads();</div>
<div class="line"><a name="l01247"></a><span class="lineno"> 1247</span>&#160; </div>
<div class="line"><a name="l01248"></a><span class="lineno"> 1248</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01249"></a><span class="lineno"> 1249</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01250"></a><span class="lineno"> 1250</span>&#160;<span class="comment">    Splits all quads along the short diagonal.</span></div>
<div class="line"><a name="l01251"></a><span class="lineno"> 1251</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01252"></a><span class="lineno"> 1252</span>&#160;  <span class="keywordtype">bool</span> ConvertQuadsToTriangles();</div>
<div class="line"><a name="l01253"></a><span class="lineno"> 1253</span>&#160; </div>
<div class="line"><a name="l01254"></a><span class="lineno"> 1254</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01255"></a><span class="lineno"> 1255</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01256"></a><span class="lineno"> 1256</span>&#160;<span class="comment">    Joins adjacent triangles into quads if the resulting quad</span></div>
<div class="line"><a name="l01257"></a><span class="lineno"> 1257</span>&#160;<span class="comment">    is nice.</span></div>
<div class="line"><a name="l01258"></a><span class="lineno"> 1258</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01259"></a><span class="lineno"> 1259</span>&#160;<span class="comment">    angle_tol_radians - [in] Used to compare adjacent</span></div>
<div class="line"><a name="l01260"></a><span class="lineno"> 1260</span>&#160;<span class="comment">      triangles&#39; face normals.  For two triangles to be considered,</span></div>
<div class="line"><a name="l01261"></a><span class="lineno"> 1261</span>&#160;<span class="comment">      the angle between their face normals has to be &lt;= angle_tol_radians.</span></div>
<div class="line"><a name="l01262"></a><span class="lineno"> 1262</span>&#160;<span class="comment">      When in doubt use ON_PI/90.0 (2 degrees).</span></div>
<div class="line"><a name="l01263"></a><span class="lineno"> 1263</span>&#160;<span class="comment">    min_diagonal_length_ratio - [in] ( &lt;= 1.0) For two triangles to be</span></div>
<div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>&#160;<span class="comment">       considered the ratio of the resulting quad&#39;s diagonals</span></div>
<div class="line"><a name="l01265"></a><span class="lineno"> 1265</span>&#160;<span class="comment">       (length of the shortest diagonal)/(length of longest diagonal).</span></div>
<div class="line"><a name="l01266"></a><span class="lineno"> 1266</span>&#160;<span class="comment">       has to be &gt;= min_diagonal_length_ratio.</span></div>
<div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>&#160;<span class="comment">       When in doubt us .875.</span></div>
<div class="line"><a name="l01268"></a><span class="lineno"> 1268</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>&#160;  <span class="keywordtype">bool</span> ConvertTrianglesToQuads(</div>
<div class="line"><a name="l01270"></a><span class="lineno"> 1270</span>&#160;    <span class="keywordtype">double</span> angle_tol_radians,</div>
<div class="line"><a name="l01271"></a><span class="lineno"> 1271</span>&#160;    <span class="keywordtype">double</span> min_diagonal_length_ratio</div>
<div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>&#160;    );</div>
<div class="line"><a name="l01273"></a><span class="lineno"> 1273</span>&#160; </div>
<div class="line"><a name="l01274"></a><span class="lineno"> 1274</span>&#160;  <span class="keywordtype">bool</span> ComputeFaceNormals();   <span class="comment">// compute face normals for all faces</span></div>
<div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>&#160;  <span class="keywordtype">bool</span> ComputeFaceNormal(<span class="keywordtype">int</span>); <span class="comment">// computes face normal of indexed face</span></div>
<div class="line"><a name="l01276"></a><span class="lineno"> 1276</span>&#160; </div>
<div class="line"><a name="l01277"></a><span class="lineno"> 1277</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01278"></a><span class="lineno"> 1278</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01279"></a><span class="lineno"> 1279</span>&#160;<span class="comment">    Get a list of pairs of faces that clash.</span></div>
<div class="line"><a name="l01280"></a><span class="lineno"> 1280</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01281"></a><span class="lineno"> 1281</span>&#160;<span class="comment">    max_pair_count - [in]</span></div>
<div class="line"><a name="l01282"></a><span class="lineno"> 1282</span>&#160;<span class="comment">      If max_pair_count &gt; 0, then at most this many pairs</span></div>
<div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>&#160;<span class="comment">      will be appended to the clashing_pairs[] array.</span></div>
<div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>&#160;<span class="comment">      If max_pair_count &lt;= 0, then all clashing pairs</span></div>
<div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>&#160;<span class="comment">      will be appended to the clashing_pairs[] array.</span></div>
<div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>&#160;<span class="comment">    clashing_pairs - [out]</span></div>
<div class="line"><a name="l01287"></a><span class="lineno"> 1287</span>&#160;<span class="comment">      The faces indices of clashing pairs are appended</span></div>
<div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>&#160;<span class="comment">      to this array. </span></div>
<div class="line"><a name="l01289"></a><span class="lineno"> 1289</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01290"></a><span class="lineno"> 1290</span>&#160;<span class="comment">    Number of pairs appended to clashing_pairs[].</span></div>
<div class="line"><a name="l01291"></a><span class="lineno"> 1291</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01292"></a><span class="lineno"> 1292</span>&#160;  <span class="keywordtype">int</span> GetClashingFacePairs( </div>
<div class="line"><a name="l01293"></a><span class="lineno"> 1293</span>&#160;    <span class="keywordtype">int</span> max_pair_count,</div>
<div class="line"><a name="l01294"></a><span class="lineno"> 1294</span>&#160;    <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt; ON_2dex &gt;</a>&amp; clashing_pairs</div>
<div class="line"><a name="l01295"></a><span class="lineno"> 1295</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01296"></a><span class="lineno"> 1296</span>&#160; </div>
<div class="line"><a name="l01297"></a><span class="lineno"> 1297</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01298"></a><span class="lineno"> 1298</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01299"></a><span class="lineno"> 1299</span>&#160;<span class="comment">    Cull clashing faces from the mesh.</span></div>
<div class="line"><a name="l01300"></a><span class="lineno"> 1300</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01301"></a><span class="lineno"> 1301</span>&#160;<span class="comment">    what_to_cull - [in]</span></div>
<div class="line"><a name="l01302"></a><span class="lineno"> 1302</span>&#160;<span class="comment">      0: when a pair of faces clash, cull both faces</span></div>
<div class="line"><a name="l01303"></a><span class="lineno"> 1303</span>&#160;<span class="comment">      1: when a pair of faces clash, leave the face with the</span></div>
<div class="line"><a name="l01304"></a><span class="lineno"> 1304</span>&#160;<span class="comment">         longest edge.</span></div>
<div class="line"><a name="l01305"></a><span class="lineno"> 1305</span>&#160;<span class="comment">      2: when a pair of faces clash, cull the face with the</span></div>
<div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>&#160;<span class="comment">         longest edge.</span></div>
<div class="line"><a name="l01307"></a><span class="lineno"> 1307</span>&#160;<span class="comment">      3: when a pair of faces clash, leave the face with</span></div>
<div class="line"><a name="l01308"></a><span class="lineno"> 1308</span>&#160;<span class="comment">         the largest area.</span></div>
<div class="line"><a name="l01309"></a><span class="lineno"> 1309</span>&#160;<span class="comment">      4: when a pair of faces clash, cull the face with</span></div>
<div class="line"><a name="l01310"></a><span class="lineno"> 1310</span>&#160;<span class="comment">         the largest area.</span></div>
<div class="line"><a name="l01311"></a><span class="lineno"> 1311</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01312"></a><span class="lineno"> 1312</span>&#160;<span class="comment">    Number of faces culled from the mesh.</span></div>
<div class="line"><a name="l01313"></a><span class="lineno"> 1313</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l01314"></a><span class="lineno"> 1314</span>&#160;<span class="comment">    If a large face clashes with many small faces, the large</span></div>
<div class="line"><a name="l01315"></a><span class="lineno"> 1315</span>&#160;<span class="comment">    face and one small face will be removed.  When a degenerate</span></div>
<div class="line"><a name="l01316"></a><span class="lineno"> 1316</span>&#160;<span class="comment">    face is encountered, it is also culled.</span></div>
<div class="line"><a name="l01317"></a><span class="lineno"> 1317</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01318"></a><span class="lineno"> 1318</span>&#160;  <span class="keywordtype">int</span> CullClashingFaces( <span class="keywordtype">int</span> what_to_cull );</div>
<div class="line"><a name="l01319"></a><span class="lineno"> 1319</span>&#160; </div>
<div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>&#160;  <span class="keywordtype">int</span> CullDegenerateFaces(); <span class="comment">// returns number of degenerate faces</span></div>
<div class="line"><a name="l01321"></a><span class="lineno"> 1321</span>&#160; </div>
<div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>&#160;  <span class="keywordtype">int</span> CullUnusedVertices(); <span class="comment">// returns number of culled vertices</span></div>
<div class="line"><a name="l01323"></a><span class="lineno"> 1323</span>&#160; </div>
<div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>&#160;  <span class="comment">// Description:</span></div>
<div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>&#160;  <span class="comment">//   Removes any unreferenced objects from arrays, reindexes as needed,</span></div>
<div class="line"><a name="l01326"></a><span class="lineno"> 1326</span>&#160;  <span class="comment">//   and shrinks arrays to minimum required size.</span></div>
<div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>&#160;  <span class="keywordtype">bool</span> Compact();</div>
<div class="line"><a name="l01328"></a><span class="lineno"> 1328</span>&#160; </div>
<div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>&#160;  <span class="keywordtype">bool</span> ComputeVertexNormals();    <span class="comment">// uses face normals to cook up a vertex normal</span></div>
<div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>&#160;  </div>
<div class="line"><a name="l01332"></a><span class="lineno"> 1332</span>&#160;  <span class="comment">// Scales textures so the texture domains are [0,1] and</span></div>
<div class="line"><a name="l01333"></a><span class="lineno"> 1333</span>&#160;  <span class="comment">// eliminates any texture rotations.</span></div>
<div class="line"><a name="l01334"></a><span class="lineno"> 1334</span>&#160;  <span class="keywordtype">bool</span> NormalizeTextureCoordinates();</div>
<div class="line"><a name="l01335"></a><span class="lineno"> 1335</span>&#160; </div>
<div class="line"><a name="l01337"></a><span class="lineno"> 1337</span>&#160;    <span class="comment">// Description:</span></div>
<div class="line"><a name="l01338"></a><span class="lineno"> 1338</span>&#160;    <span class="comment">//      Transposes the texture coordinates</span></div>
<div class="line"><a name="l01339"></a><span class="lineno"> 1339</span>&#160;    <span class="comment">//  Returns</span></div>
<div class="line"><a name="l01340"></a><span class="lineno"> 1340</span>&#160;    <span class="comment">//          true  -  success</span></div>
<div class="line"><a name="l01341"></a><span class="lineno"> 1341</span>&#160;    <span class="keywordtype">bool</span> TransposeTextureCoordinates();</div>
<div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>&#160;    <span class="keywordtype">bool</span> TransposeSurfaceParameters();</div>
<div class="line"><a name="l01343"></a><span class="lineno"> 1343</span>&#160; </div>
<div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>&#160;    <span class="comment">// Description:</span></div>
<div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>&#160;    <span class="comment">//      Reverse one coordinate direction of the texture coordinates, within texture domain m_tex_domain</span></div>
<div class="line"><a name="l01347"></a><span class="lineno"> 1347</span>&#160;    <span class="comment">//  Parameters:</span></div>
<div class="line"><a name="l01348"></a><span class="lineno"> 1348</span>&#160;    <span class="comment">//      dir  -[in]  -   dir=0  first texture coordinate is reversed</span></div>
<div class="line"><a name="l01349"></a><span class="lineno"> 1349</span>&#160;    <span class="comment">//                                    dir=1 second texture coordinate is reversed</span></div>
<div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>&#160;    <span class="comment">//  Returns</span></div>
<div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>&#160;    <span class="comment">//          true  -  success</span></div>
<div class="line"><a name="l01352"></a><span class="lineno"> 1352</span>&#160;    <span class="keywordtype">bool</span> ReverseTextureCoordinates( <span class="keywordtype">int</span> dir );</div>
<div class="line"><a name="l01353"></a><span class="lineno"> 1353</span>&#160;    <span class="keywordtype">bool</span> ReverseSurfaceParameters( <span class="keywordtype">int</span> dir );</div>
<div class="line"><a name="l01354"></a><span class="lineno"> 1354</span>&#160; </div>
<div class="line"><a name="l01355"></a><span class="lineno"> 1355</span>&#160; </div>
<div class="line"><a name="l01356"></a><span class="lineno"> 1356</span>&#160; </div>
<div class="line"><a name="l01357"></a><span class="lineno"> 1357</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01358"></a><span class="lineno"> 1358</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01359"></a><span class="lineno"> 1359</span>&#160;<span class="comment">    Use a texture mapping function to set the m_T[] values.</span></div>
<div class="line"><a name="l01360"></a><span class="lineno"> 1360</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01361"></a><span class="lineno"> 1361</span>&#160;<span class="comment">    mapping - [in]</span></div>
<div class="line"><a name="l01362"></a><span class="lineno"> 1362</span>&#160;<span class="comment">    mesh_xform - [in]</span></div>
<div class="line"><a name="l01363"></a><span class="lineno"> 1363</span>&#160;<span class="comment">      If not NULL, the mapping calculation is performed as</span></div>
<div class="line"><a name="l01364"></a><span class="lineno"> 1364</span>&#160;<span class="comment">      if the mesh were transformed by mesh_xform; the</span></div>
<div class="line"><a name="l01365"></a><span class="lineno"> 1365</span>&#160;<span class="comment">      location of the mesh is not changed.</span></div>
<div class="line"><a name="l01366"></a><span class="lineno"> 1366</span>&#160;<span class="comment">    bLazy - [in]</span></div>
<div class="line"><a name="l01367"></a><span class="lineno"> 1367</span>&#160;<span class="comment">      If true and the m_T[] values were set using the same</span></div>
<div class="line"><a name="l01368"></a><span class="lineno"> 1368</span>&#160;<span class="comment">      mapping parameters, then no calculation is performed.</span></div>
<div class="line"><a name="l01369"></a><span class="lineno"> 1369</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01370"></a><span class="lineno"> 1370</span>&#160;<span class="comment">    True if successful.</span></div>
<div class="line"><a name="l01371"></a><span class="lineno"> 1371</span>&#160;<span class="comment">  See Also:</span></div>
<div class="line"><a name="l01372"></a><span class="lineno"> 1372</span>&#160;<span class="comment">    ON_TextureMapping::GetTextureCoordinates</span></div>
<div class="line"><a name="l01373"></a><span class="lineno"> 1373</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01374"></a><span class="lineno"> 1374</span>&#160;  <span class="keywordtype">bool</span> SetTextureCoordinates( </div>
<div class="line"><a name="l01375"></a><span class="lineno"> 1375</span>&#160;          <span class="keyword">const</span> <span class="keyword">class</span> <a class="code" href="class_o_n___texture_mapping.html">ON_TextureMapping</a>&amp; mapping,</div>
<div class="line"><a name="l01376"></a><span class="lineno"> 1376</span>&#160;                    <span class="keyword">const</span> <span class="keyword">class</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>* mesh_xform = 0,</div>
<div class="line"><a name="l01377"></a><span class="lineno"> 1377</span>&#160;          <span class="keywordtype">bool</span> bLazy = <span class="keyword">true</span></div>
<div class="line"><a name="l01378"></a><span class="lineno"> 1378</span>&#160;          );</div>
<div class="line"><a name="l01379"></a><span class="lineno"> 1379</span>&#160; </div>
<div class="line"><a name="l01380"></a><span class="lineno"> 1380</span>&#160;  <span class="keywordtype">bool</span> HasCachedTextureCoordinates() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01381"></a><span class="lineno"> 1381</span>&#160; </div>
<div class="line"><a name="l01382"></a><span class="lineno"> 1382</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___texture_coordinates.html">ON_TextureCoordinates</a>* CachedTextureCoordinates( </div>
<div class="line"><a name="l01383"></a><span class="lineno"> 1383</span>&#160;          <span class="keyword">const</span> <a class="code" href="class_o_n___u_u_i_d.html">ON_UUID</a>&amp; mapping_id </div>
<div class="line"><a name="l01384"></a><span class="lineno"> 1384</span>&#160;          ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01385"></a><span class="lineno"> 1385</span>&#160; </div>
<div class="line"><a name="l01386"></a><span class="lineno"> 1386</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___texture_coordinates.html">ON_TextureCoordinates</a>* SetCachedTextureCoordinates( </div>
<div class="line"><a name="l01387"></a><span class="lineno"> 1387</span>&#160;          <span class="keyword">const</span> <span class="keyword">class</span> <a class="code" href="class_o_n___texture_mapping.html">ON_TextureMapping</a>&amp; mapping,</div>
<div class="line"><a name="l01388"></a><span class="lineno"> 1388</span>&#160;                    <span class="keyword">const</span> <span class="keyword">class</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>* mesh_xform = 0,</div>
<div class="line"><a name="l01389"></a><span class="lineno"> 1389</span>&#160;          <span class="keywordtype">bool</span> bLazy = <span class="keyword">true</span></div>
<div class="line"><a name="l01390"></a><span class="lineno"> 1390</span>&#160;          );</div>
<div class="line"><a name="l01391"></a><span class="lineno"> 1391</span>&#160; </div>
<div class="line"><a name="l01392"></a><span class="lineno"> 1392</span>&#160;  <span class="keywordtype">bool</span> EvaluateMeshGeometry( <span class="keyword">const</span> <a class="code" href="class_o_n___surface.html">ON_Surface</a>&amp; ); <span class="comment">// evaluate surface at tcoords</span></div>
<div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>&#160;                                                  <span class="comment">// to set mesh geometry</span></div>
<div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>&#160; </div>
<div class="line"><a name="l01395"></a><span class="lineno"> 1395</span>&#160;  <span class="comment">// finds all coincident vertices and merges them if break angle is small enough</span></div>
<div class="line"><a name="l01396"></a><span class="lineno"> 1396</span>&#160;  <span class="keywordtype">bool</span> CombineCoincidentVertices( </div>
<div class="line"><a name="l01397"></a><span class="lineno"> 1397</span>&#160;          <a class="code" href="class_o_n__3f_vector.html">ON_3fVector</a>, <span class="comment">// coordinate tols for considering vertices</span></div>
<div class="line"><a name="l01398"></a><span class="lineno"> 1398</span>&#160;                       <span class="comment">// to be coincident</span></div>
<div class="line"><a name="l01399"></a><span class="lineno"> 1399</span>&#160;          <span class="keywordtype">double</span>  <span class="comment">// cosine normal angle tolerance in radians</span></div>
<div class="line"><a name="l01400"></a><span class="lineno"> 1400</span>&#160;                  <span class="comment">// if vertices are coincident, then they are combined</span></div>
<div class="line"><a name="l01401"></a><span class="lineno"> 1401</span>&#160;                  <span class="comment">// if NormalA o NormalB &gt;= this value</span></div>
<div class="line"><a name="l01402"></a><span class="lineno"> 1402</span>&#160;          );</div>
<div class="line"><a name="l01403"></a><span class="lineno"> 1403</span>&#160; </div>
<div class="line"><a name="l01404"></a><span class="lineno"> 1404</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01405"></a><span class="lineno"> 1405</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01406"></a><span class="lineno"> 1406</span>&#160;<span class="comment">    Combines identical vertices.</span></div>
<div class="line"><a name="l01407"></a><span class="lineno"> 1407</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01408"></a><span class="lineno"> 1408</span>&#160;<span class="comment">    bIgnoreVertexNormals - [in] If true, then vertex normals</span></div>
<div class="line"><a name="l01409"></a><span class="lineno"> 1409</span>&#160;<span class="comment">      are ignored when comparing vertices.</span></div>
<div class="line"><a name="l01410"></a><span class="lineno"> 1410</span>&#160;<span class="comment">    bIgnoreTextureCoordinates - [in] If true, then vertex</span></div>
<div class="line"><a name="l01411"></a><span class="lineno"> 1411</span>&#160;<span class="comment">      texture coordinates, colors, and principal curvatures</span></div>
<div class="line"><a name="l01412"></a><span class="lineno"> 1412</span>&#160;<span class="comment">      are ignored when comparing vertices.</span></div>
<div class="line"><a name="l01413"></a><span class="lineno"> 1413</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01414"></a><span class="lineno"> 1414</span>&#160;<span class="comment">    True if the mesh is changed, in which case the returned</span></div>
<div class="line"><a name="l01415"></a><span class="lineno"> 1415</span>&#160;<span class="comment">    mesh will have fewer vertices than the input mesh.</span></div>
<div class="line"><a name="l01416"></a><span class="lineno"> 1416</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01417"></a><span class="lineno"> 1417</span>&#160;  <span class="keywordtype">bool</span> CombineIdenticalVertices(</div>
<div class="line"><a name="l01418"></a><span class="lineno"> 1418</span>&#160;          <span class="keywordtype">bool</span> bIgnoreVertexNormals = <span class="keyword">false</span>,</div>
<div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>&#160;          <span class="keywordtype">bool</span> bIgnoreTextureCoordinates = <span class="keyword">false</span></div>
<div class="line"><a name="l01420"></a><span class="lineno"> 1420</span>&#160;          );</div>
<div class="line"><a name="l01421"></a><span class="lineno"> 1421</span>&#160; </div>
<div class="line"><a name="l01422"></a><span class="lineno"> 1422</span>&#160;  <span class="keywordtype">void</span> Append( <span class="keyword">const</span> <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>&amp; ); <span class="comment">// appends a copy of mesh to this and updates</span></div>
<div class="line"><a name="l01423"></a><span class="lineno"> 1423</span>&#160;                                 <span class="comment">// indices of appended mesh parts</span></div>
<div class="line"><a name="l01424"></a><span class="lineno"> 1424</span>&#160; </div>
<div class="line"><a name="l01425"></a><span class="lineno"> 1425</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01426"></a><span class="lineno"> 1426</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01427"></a><span class="lineno"> 1427</span>&#160;<span class="comment">    Append a list of meshes. This function is much more efficient</span></div>
<div class="line"><a name="l01428"></a><span class="lineno"> 1428</span>&#160;<span class="comment">    than making repeated calls to ON_Mesh::Append(const ON_Mesh&amp;)</span></div>
<div class="line"><a name="l01429"></a><span class="lineno"> 1429</span>&#160;<span class="comment">    when lots of meshes are being joined into a single large mesh.</span></div>
<div class="line"><a name="l01430"></a><span class="lineno"> 1430</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01431"></a><span class="lineno"> 1431</span>&#160;<span class="comment">    count - [in]</span></div>
<div class="line"><a name="l01432"></a><span class="lineno"> 1432</span>&#160;<span class="comment">      length of meshes[] array.</span></div>
<div class="line"><a name="l01433"></a><span class="lineno"> 1433</span>&#160;<span class="comment">    meshes - [in]</span></div>
<div class="line"><a name="l01434"></a><span class="lineno"> 1434</span>&#160;<span class="comment">      array of meshes to append.</span></div>
<div class="line"><a name="l01435"></a><span class="lineno"> 1435</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01436"></a><span class="lineno"> 1436</span>&#160;  <span class="keywordtype">void</span> Append( <span class="keywordtype">int</span> count, <span class="keyword">const</span> <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>* <span class="keyword">const</span>* meshes );</div>
<div class="line"><a name="l01437"></a><span class="lineno"> 1437</span>&#160;  </div>
<div class="line"><a name="l01438"></a><span class="lineno"> 1438</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01439"></a><span class="lineno"> 1439</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01440"></a><span class="lineno"> 1440</span>&#160;<span class="comment">    Expert user function to set m_is_closed member.  </span></div>
<div class="line"><a name="l01441"></a><span class="lineno"> 1441</span>&#160;<span class="comment">    Setting this value correctly after a mesh is constructed </span></div>
<div class="line"><a name="l01442"></a><span class="lineno"> 1442</span>&#160;<span class="comment">    can save time when IsClosed() is called.</span></div>
<div class="line"><a name="l01443"></a><span class="lineno"> 1443</span>&#160;<span class="comment">    This function sets the private member variable m_is_closed.</span></div>
<div class="line"><a name="l01444"></a><span class="lineno"> 1444</span>&#160;<span class="comment">  Paramters:</span></div>
<div class="line"><a name="l01445"></a><span class="lineno"> 1445</span>&#160;<span class="comment">    closed - [in]</span></div>
<div class="line"><a name="l01446"></a><span class="lineno"> 1446</span>&#160;<span class="comment">      0: The mesh is not closed.  There is at least one face with an </span></div>
<div class="line"><a name="l01447"></a><span class="lineno"> 1447</span>&#160;<span class="comment">         edge that is geometrically distinct (as an unoriented line segment)</span></div>
<div class="line"><a name="l01448"></a><span class="lineno"> 1448</span>&#160;<span class="comment">         from all other edges.</span></div>
<div class="line"><a name="l01449"></a><span class="lineno"> 1449</span>&#160;<span class="comment">      1: The mesh is closed.  Every geometrically distict edge is used</span></div>
<div class="line"><a name="l01450"></a><span class="lineno"> 1450</span>&#160;<span class="comment">         by two or more faces.</span></div>
<div class="line"><a name="l01451"></a><span class="lineno"> 1451</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01452"></a><span class="lineno"> 1452</span>&#160;  <span class="keywordtype">void</span> SetClosed(<span class="keywordtype">int</span> closed);</div>
<div class="line"><a name="l01453"></a><span class="lineno"> 1453</span>&#160; </div>
<div class="line"><a name="l01454"></a><span class="lineno"> 1454</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01455"></a><span class="lineno"> 1455</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01456"></a><span class="lineno"> 1456</span>&#160;<span class="comment">    True if every mesh &quot;edge&quot; has two or more faces.</span></div>
<div class="line"><a name="l01457"></a><span class="lineno"> 1457</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01458"></a><span class="lineno"> 1458</span>&#160;  <span class="keywordtype">bool</span> IsClosed() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01459"></a><span class="lineno"> 1459</span>&#160; </div>
<div class="line"><a name="l01460"></a><span class="lineno"> 1460</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01461"></a><span class="lineno"> 1461</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01462"></a><span class="lineno"> 1462</span>&#160;<span class="comment">    True if every mesh &quot;edge&quot; has at most two faces.</span></div>
<div class="line"><a name="l01463"></a><span class="lineno"> 1463</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01464"></a><span class="lineno"> 1464</span>&#160;  <span class="keywordtype">bool</span> IsManifold() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01465"></a><span class="lineno"> 1465</span>&#160; </div>
<div class="line"><a name="l01466"></a><span class="lineno"> 1466</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01467"></a><span class="lineno"> 1467</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01468"></a><span class="lineno"> 1468</span>&#160;<span class="comment">    True if the mesh is manifold and every pair of faces</span></div>
<div class="line"><a name="l01469"></a><span class="lineno"> 1469</span>&#160;<span class="comment">    that share an &quot;edge&quot; have compatible orientations.</span></div>
<div class="line"><a name="l01470"></a><span class="lineno"> 1470</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01471"></a><span class="lineno"> 1471</span>&#160;  <span class="keywordtype">bool</span> IsOriented() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01472"></a><span class="lineno"> 1472</span>&#160; </div>
<div class="line"><a name="l01473"></a><span class="lineno"> 1473</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01474"></a><span class="lineno"> 1474</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01475"></a><span class="lineno"> 1475</span>&#160;<span class="comment">    Determine if the mesh is a manifold.</span></div>
<div class="line"><a name="l01476"></a><span class="lineno"> 1476</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01477"></a><span class="lineno"> 1477</span>&#160;<span class="comment">    bTopologicalTest - [in]</span></div>
<div class="line"><a name="l01478"></a><span class="lineno"> 1478</span>&#160;<span class="comment">      If true, the query treats coincident vertices as</span></div>
<div class="line"><a name="l01479"></a><span class="lineno"> 1479</span>&#160;<span class="comment">      the same.</span></div>
<div class="line"><a name="l01480"></a><span class="lineno"> 1480</span>&#160;<span class="comment">    pbIsOriented - [out]</span></div>
<div class="line"><a name="l01481"></a><span class="lineno"> 1481</span>&#160;<span class="comment">      If the input pointer is not NULL, then the returned</span></div>
<div class="line"><a name="l01482"></a><span class="lineno"> 1482</span>&#160;<span class="comment">      value of *pbIsOriented will be true if the mesh</span></div>
<div class="line"><a name="l01483"></a><span class="lineno"> 1483</span>&#160;<span class="comment">      is a manifold and adjacent faces have compatible</span></div>
<div class="line"><a name="l01484"></a><span class="lineno"> 1484</span>&#160;<span class="comment">      face normals.</span></div>
<div class="line"><a name="l01485"></a><span class="lineno"> 1485</span>&#160;<span class="comment">    pbHasBoundary - [out]</span></div>
<div class="line"><a name="l01486"></a><span class="lineno"> 1486</span>&#160;<span class="comment">      If the input pointer is not NULL, then the returned</span></div>
<div class="line"><a name="l01487"></a><span class="lineno"> 1487</span>&#160;<span class="comment">      value of *pbHasBoundary will be true if the mesh</span></div>
<div class="line"><a name="l01488"></a><span class="lineno"> 1488</span>&#160;<span class="comment">      is a manifold and there is at least one &quot;edge&quot;</span></div>
<div class="line"><a name="l01489"></a><span class="lineno"> 1489</span>&#160;<span class="comment">      with no adjacent faces have compatible</span></div>
<div class="line"><a name="l01490"></a><span class="lineno"> 1490</span>&#160;<span class="comment">      face normals.</span></div>
<div class="line"><a name="l01491"></a><span class="lineno"> 1491</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01492"></a><span class="lineno"> 1492</span>&#160;<span class="comment">    True if every mesh &quot;edge&quot; has at most two adjacent faces.</span></div>
<div class="line"><a name="l01493"></a><span class="lineno"> 1493</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01494"></a><span class="lineno"> 1494</span>&#160;  <span class="keywordtype">bool</span> IsManifold(</div>
<div class="line"><a name="l01495"></a><span class="lineno"> 1495</span>&#160;    <span class="keywordtype">bool</span> bTopologicalTest,</div>
<div class="line"><a name="l01496"></a><span class="lineno"> 1496</span>&#160;    <span class="keywordtype">bool</span>* pbIsOriented = NULL,</div>
<div class="line"><a name="l01497"></a><span class="lineno"> 1497</span>&#160;    <span class="keywordtype">bool</span>* pbHasBoundary = NULL</div>
<div class="line"><a name="l01498"></a><span class="lineno"> 1498</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01499"></a><span class="lineno"> 1499</span>&#160; </div>
<div class="line"><a name="l01500"></a><span class="lineno"> 1500</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01501"></a><span class="lineno"> 1501</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01502"></a><span class="lineno"> 1502</span>&#160;<span class="comment">    Expert user function to set m_is_solid member.  </span></div>
<div class="line"><a name="l01503"></a><span class="lineno"> 1503</span>&#160;<span class="comment">    Setting this value correctly after a mesh is constructed </span></div>
<div class="line"><a name="l01504"></a><span class="lineno"> 1504</span>&#160;<span class="comment">    can save time when IsSolid() is called.</span></div>
<div class="line"><a name="l01505"></a><span class="lineno"> 1505</span>&#160;<span class="comment">    This function sets the private member variable m_is_solid.</span></div>
<div class="line"><a name="l01506"></a><span class="lineno"> 1506</span>&#160;<span class="comment">    If solid is nonzero, it will set m_is_closed to 1.</span></div>
<div class="line"><a name="l01507"></a><span class="lineno"> 1507</span>&#160;<span class="comment">  Paramters:</span></div>
<div class="line"><a name="l01508"></a><span class="lineno"> 1508</span>&#160;<span class="comment">    solid - [in]</span></div>
<div class="line"><a name="l01509"></a><span class="lineno"> 1509</span>&#160;<span class="comment">      0: The mesh is not an oriented manifold solid mesh. Either</span></div>
<div class="line"><a name="l01510"></a><span class="lineno"> 1510</span>&#160;<span class="comment">         the mesh is not closed, not manifold, or the faces are</span></div>
<div class="line"><a name="l01511"></a><span class="lineno"> 1511</span>&#160;<span class="comment">         not oriented compatibly.</span></div>
<div class="line"><a name="l01512"></a><span class="lineno"> 1512</span>&#160;<span class="comment">      1: The mesh is an oriented manifold solid whose face normals</span></div>
<div class="line"><a name="l01513"></a><span class="lineno"> 1513</span>&#160;<span class="comment">         point outwards.</span></div>
<div class="line"><a name="l01514"></a><span class="lineno"> 1514</span>&#160;<span class="comment">     -1: The mesh is an oriented manifold solid whose face normals</span></div>
<div class="line"><a name="l01515"></a><span class="lineno"> 1515</span>&#160;<span class="comment">         point inwards.</span></div>
<div class="line"><a name="l01516"></a><span class="lineno"> 1516</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01517"></a><span class="lineno"> 1517</span>&#160;  <span class="keywordtype">void</span> SetSolidOrientation(<span class="keywordtype">int</span> solid_orientation);</div>
<div class="line"><a name="l01518"></a><span class="lineno"> 1518</span>&#160; </div>
<div class="line"><a name="l01519"></a><span class="lineno"> 1519</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01520"></a><span class="lineno"> 1520</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01521"></a><span class="lineno"> 1521</span>&#160;<span class="comment">    Determine orientation of a mesh.</span></div>
<div class="line"><a name="l01522"></a><span class="lineno"> 1522</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01523"></a><span class="lineno"> 1523</span>&#160;<span class="comment">    +1     mesh is a solid with outward facing normals</span></div>
<div class="line"><a name="l01524"></a><span class="lineno"> 1524</span>&#160;<span class="comment">    -1     mesh is a solid with inward facing normals</span></div>
<div class="line"><a name="l01525"></a><span class="lineno"> 1525</span>&#160;<span class="comment">     0     mesh is not a solid</span></div>
<div class="line"><a name="l01526"></a><span class="lineno"> 1526</span>&#160;<span class="comment">  See Also:</span></div>
<div class="line"><a name="l01527"></a><span class="lineno"> 1527</span>&#160;<span class="comment">    ON_Mesh::IsSolid</span></div>
<div class="line"><a name="l01528"></a><span class="lineno"> 1528</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01529"></a><span class="lineno"> 1529</span>&#160;  <span class="keywordtype">int</span> SolidOrientation() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01530"></a><span class="lineno"> 1530</span>&#160; </div>
<div class="line"><a name="l01531"></a><span class="lineno"> 1531</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01532"></a><span class="lineno"> 1532</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01533"></a><span class="lineno"> 1533</span>&#160;<span class="comment">    Test mesh to see if it is a solid.  (A &quot;solid&quot; is</span></div>
<div class="line"><a name="l01534"></a><span class="lineno"> 1534</span>&#160;<span class="comment">    a closed oriented manifold.)</span></div>
<div class="line"><a name="l01535"></a><span class="lineno"> 1535</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01536"></a><span class="lineno"> 1536</span>&#160;<span class="comment">    true       mesh is a solid</span></div>
<div class="line"><a name="l01537"></a><span class="lineno"> 1537</span>&#160;<span class="comment">    fals       mesh is not a solid</span></div>
<div class="line"><a name="l01538"></a><span class="lineno"> 1538</span>&#160;<span class="comment">  See Also:</span></div>
<div class="line"><a name="l01539"></a><span class="lineno"> 1539</span>&#160;<span class="comment">    ON_Mesh::SolidOrientation</span></div>
<div class="line"><a name="l01540"></a><span class="lineno"> 1540</span>&#160;<span class="comment">    ON_Mesh::IsManifold</span></div>
<div class="line"><a name="l01541"></a><span class="lineno"> 1541</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01542"></a><span class="lineno"> 1542</span>&#160;  <span class="keywordtype">bool</span> IsSolid() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01543"></a><span class="lineno"> 1543</span>&#160; </div>
<div class="line"><a name="l01544"></a><span class="lineno"> 1544</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01545"></a><span class="lineno"> 1545</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01546"></a><span class="lineno"> 1546</span>&#160;<span class="comment">    Appends a list of mesh edges that begin or end at the specified</span></div>
<div class="line"><a name="l01547"></a><span class="lineno"> 1547</span>&#160;<span class="comment">    vertices to the edges[] array.</span></div>
<div class="line"><a name="l01548"></a><span class="lineno"> 1548</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01549"></a><span class="lineno"> 1549</span>&#160;<span class="comment">    vcount - [in]</span></div>
<div class="line"><a name="l01550"></a><span class="lineno"> 1550</span>&#160;<span class="comment">      number of vertices</span></div>
<div class="line"><a name="l01551"></a><span class="lineno"> 1551</span>&#160;<span class="comment">    vertex_index - [in]</span></div>
<div class="line"><a name="l01552"></a><span class="lineno"> 1552</span>&#160;<span class="comment">      array of vertex indices</span></div>
<div class="line"><a name="l01553"></a><span class="lineno"> 1553</span>&#160;<span class="comment">    bNoDuplicates - [in]</span></div>
<div class="line"><a name="l01554"></a><span class="lineno"> 1554</span>&#160;<span class="comment">      If true, then only one edges[] is added for each edge,</span></div>
<div class="line"><a name="l01555"></a><span class="lineno"> 1555</span>&#160;<span class="comment">      the first vertex index will alwasy be less than the</span></div>
<div class="line"><a name="l01556"></a><span class="lineno"> 1556</span>&#160;<span class="comment">      second, and the returned elements are sorted in dictionary</span></div>
<div class="line"><a name="l01557"></a><span class="lineno"> 1557</span>&#160;<span class="comment">      order.</span></div>
<div class="line"><a name="l01558"></a><span class="lineno"> 1558</span>&#160;<span class="comment">      If false and an edge is shared by multiple faces, then</span></div>
<div class="line"><a name="l01559"></a><span class="lineno"> 1559</span>&#160;<span class="comment">      there will be an edges[] element added for each face and the</span></div>
<div class="line"><a name="l01560"></a><span class="lineno"> 1560</span>&#160;<span class="comment">      order of the vertex indicies will indicate the orientation</span></div>
<div class="line"><a name="l01561"></a><span class="lineno"> 1561</span>&#160;<span class="comment">      of the edge with respect to the face.  No sorting is performed</span></div>
<div class="line"><a name="l01562"></a><span class="lineno"> 1562</span>&#160;<span class="comment">      in this case.</span></div>
<div class="line"><a name="l01563"></a><span class="lineno"> 1563</span>&#160;<span class="comment">    edges - [out]</span></div>
<div class="line"><a name="l01564"></a><span class="lineno"> 1564</span>&#160;<span class="comment">      Edges that begin or end at one of the specified vertices are</span></div>
<div class="line"><a name="l01565"></a><span class="lineno"> 1565</span>&#160;<span class="comment">      appended to this array.  Each ON_2dex records the start and</span></div>
<div class="line"><a name="l01566"></a><span class="lineno"> 1566</span>&#160;<span class="comment">      end vertex index.</span></div>
<div class="line"><a name="l01567"></a><span class="lineno"> 1567</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01568"></a><span class="lineno"> 1568</span>&#160;<span class="comment">    Number of ON_2dex values appended to the edges[] array.</span></div>
<div class="line"><a name="l01569"></a><span class="lineno"> 1569</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01570"></a><span class="lineno"> 1570</span>&#160;  <span class="keywordtype">int</span> GetVertexEdges( </div>
<div class="line"><a name="l01571"></a><span class="lineno"> 1571</span>&#160;    <span class="keywordtype">int</span> vcount,</div>
<div class="line"><a name="l01572"></a><span class="lineno"> 1572</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">int</span>* vertex_index, </div>
<div class="line"><a name="l01573"></a><span class="lineno"> 1573</span>&#160;    <span class="keywordtype">bool</span> bNoDuplicates,</div>
<div class="line"><a name="l01574"></a><span class="lineno"> 1574</span>&#160;    <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_2dex&gt;</a>&amp; edges</div>
<div class="line"><a name="l01575"></a><span class="lineno"> 1575</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01576"></a><span class="lineno"> 1576</span>&#160; </div>
<div class="line"><a name="l01577"></a><span class="lineno"> 1577</span>&#160; </div>
<div class="line"><a name="l01578"></a><span class="lineno"> 1578</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01579"></a><span class="lineno"> 1579</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01580"></a><span class="lineno"> 1580</span>&#160;<span class="comment">    Appends a list of mesh edges to the edges[] array.</span></div>
<div class="line"><a name="l01581"></a><span class="lineno"> 1581</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01582"></a><span class="lineno"> 1582</span>&#160;<span class="comment">    edges - [out]</span></div>
<div class="line"><a name="l01583"></a><span class="lineno"> 1583</span>&#160;<span class="comment">      Each edges[] element is a pair of vertex indices.  There</span></div>
<div class="line"><a name="l01584"></a><span class="lineno"> 1584</span>&#160;<span class="comment">      is at least one face in the mesh with an edge running between</span></div>
<div class="line"><a name="l01585"></a><span class="lineno"> 1585</span>&#160;<span class="comment">      the indicies.</span></div>
<div class="line"><a name="l01586"></a><span class="lineno"> 1586</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01587"></a><span class="lineno"> 1587</span>&#160;<span class="comment">    Number of ON_2dex values appended to the edges[] array.</span></div>
<div class="line"><a name="l01588"></a><span class="lineno"> 1588</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01589"></a><span class="lineno"> 1589</span>&#160;  <span class="keywordtype">int</span> GetMeshEdges( </div>
<div class="line"><a name="l01590"></a><span class="lineno"> 1590</span>&#160;    <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_2dex&gt;</a>&amp; edges</div>
<div class="line"><a name="l01591"></a><span class="lineno"> 1591</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01592"></a><span class="lineno"> 1592</span>&#160; </div>
<div class="line"><a name="l01593"></a><span class="lineno"> 1593</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01594"></a><span class="lineno"> 1594</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01595"></a><span class="lineno"> 1595</span>&#160;<span class="comment">    Assign a unique id to each vertex location.  Coincident vertices</span></div>
<div class="line"><a name="l01596"></a><span class="lineno"> 1596</span>&#160;<span class="comment">    get the same id.</span></div>
<div class="line"><a name="l01597"></a><span class="lineno"> 1597</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01598"></a><span class="lineno"> 1598</span>&#160;<span class="comment">    first_vid - [in]</span></div>
<div class="line"><a name="l01599"></a><span class="lineno"> 1599</span>&#160;<span class="comment">      Initial vertex id.  Typically 1 or 0.</span></div>
<div class="line"><a name="l01600"></a><span class="lineno"> 1600</span>&#160;<span class="comment">    Vid - [out]</span></div>
<div class="line"><a name="l01601"></a><span class="lineno"> 1601</span>&#160;<span class="comment">      If not null, then Vid[] sould be an array of length VertexCount().</span></div>
<div class="line"><a name="l01602"></a><span class="lineno"> 1602</span>&#160;<span class="comment">      and the vertex ids will be stored in this array.  If null,</span></div>
<div class="line"><a name="l01603"></a><span class="lineno"> 1603</span>&#160;<span class="comment">      the array will be allocated by calling onmalloc().  The returned</span></div>
<div class="line"><a name="l01604"></a><span class="lineno"> 1604</span>&#160;<span class="comment">      array Vid[i] is the id of the vertex m_V[i].  If m_V[i] and</span></div>
<div class="line"><a name="l01605"></a><span class="lineno"> 1605</span>&#160;<span class="comment">      m_V[j] are the same 3d point, then Vid[i] and Vid[j] will have</span></div>
<div class="line"><a name="l01606"></a><span class="lineno"> 1606</span>&#160;<span class="comment">      the same value.</span></div>
<div class="line"><a name="l01607"></a><span class="lineno"> 1607</span>&#160;<span class="comment">    Vindex - [out] (can be null)</span></div>
<div class="line"><a name="l01608"></a><span class="lineno"> 1608</span>&#160;<span class="comment">      If Vindex is not null, then it must have length at least m_V.Count()</span></div>
<div class="line"><a name="l01609"></a><span class="lineno"> 1609</span>&#160;<span class="comment">      and the returned array will be a permutation of (0,1,...,m_V.Count()-1)</span></div>
<div class="line"><a name="l01610"></a><span class="lineno"> 1610</span>&#160;<span class="comment">      such (Vid[Vindex[0]], Vid[Vindex[1]], ..., Vid[Vindex[m_V.Count()-1]])</span></div>
<div class="line"><a name="l01611"></a><span class="lineno"> 1611</span>&#160;<span class="comment">      is an increasing list of value.</span></div>
<div class="line"><a name="l01612"></a><span class="lineno"> 1612</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01613"></a><span class="lineno"> 1613</span>&#160;<span class="comment">    null if the mesh has no vertices.</span></div>
<div class="line"><a name="l01614"></a><span class="lineno"> 1614</span>&#160;<span class="comment">    An array of length VertexCount(). If vertices m_V[i] and m_V[j]</span></div>
<div class="line"><a name="l01615"></a><span class="lineno"> 1615</span>&#160;<span class="comment">    are coincident, then Vid[i] = Vid[j].  The id values begin at first_vid.</span></div>
<div class="line"><a name="l01616"></a><span class="lineno"> 1616</span>&#160;<span class="comment">    The maximum vertex id is Vid[Vindex[m_V.Count()-1]].  The number of</span></div>
<div class="line"><a name="l01617"></a><span class="lineno"> 1617</span>&#160;<span class="comment">    unique vertex locations is (Vid[Vindex[m_V.Count()-1]] - first_vid + 1).</span></div>
<div class="line"><a name="l01618"></a><span class="lineno"> 1618</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01619"></a><span class="lineno"> 1619</span>&#160;  <span class="keywordtype">int</span>* GetVertexLocationIds( </div>
<div class="line"><a name="l01620"></a><span class="lineno"> 1620</span>&#160;    <span class="keywordtype">int</span> first_vid, </div>
<div class="line"><a name="l01621"></a><span class="lineno"> 1621</span>&#160;    <span class="keywordtype">int</span>* Vid, </div>
<div class="line"><a name="l01622"></a><span class="lineno"> 1622</span>&#160;    <span class="keywordtype">int</span>* Vindex</div>
<div class="line"><a name="l01623"></a><span class="lineno"> 1623</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01624"></a><span class="lineno"> 1624</span>&#160; </div>
<div class="line"><a name="l01625"></a><span class="lineno"> 1625</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01626"></a><span class="lineno"> 1626</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01627"></a><span class="lineno"> 1627</span>&#160;<span class="comment">    Get a list of the sides of every face.</span></div>
<div class="line"><a name="l01628"></a><span class="lineno"> 1628</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01629"></a><span class="lineno"> 1629</span>&#160;<span class="comment">    Vid - [in] (can be null)</span></div>
<div class="line"><a name="l01630"></a><span class="lineno"> 1630</span>&#160;<span class="comment">      If Vid is null, then the mesh m_V[] index values are used to set</span></div>
<div class="line"><a name="l01631"></a><span class="lineno"> 1631</span>&#160;<span class="comment">      the ON_MeshFaceSide::vi[] values.</span></div>
<div class="line"><a name="l01632"></a><span class="lineno"> 1632</span>&#160;<span class="comment">      If Vid is not null, then it must be an array of length VertexCount().</span></div>
<div class="line"><a name="l01633"></a><span class="lineno"> 1633</span>&#160;<span class="comment">      The value Vid[mesh m_V[] index] will be used to set the</span></div>
<div class="line"><a name="l01634"></a><span class="lineno"> 1634</span>&#160;<span class="comment">      ON_MeshFaceSide::vi[] values.</span></div>
<div class="line"><a name="l01635"></a><span class="lineno"> 1635</span>&#160;<span class="comment">    sides - [out]</span></div>
<div class="line"><a name="l01636"></a><span class="lineno"> 1636</span>&#160;<span class="comment">      If the input value of sides is not null, then sides[] must be long </span></div>
<div class="line"><a name="l01637"></a><span class="lineno"> 1637</span>&#160;<span class="comment">      enough to hold the returned side list.  The maximum posssible length</span></div>
<div class="line"><a name="l01638"></a><span class="lineno"> 1638</span>&#160;<span class="comment">      is 4*FaceCount() for a mesh contining FaceCount() nondegenerate quads.</span></div>
<div class="line"><a name="l01639"></a><span class="lineno"> 1639</span>&#160;<span class="comment">      If the input value of sides is null, memory will be allocated using</span></div>
<div class="line"><a name="l01640"></a><span class="lineno"> 1640</span>&#160;<span class="comment">      onmalloc() and the caller is responsible for calling onfree() at an</span></div>
<div class="line"><a name="l01641"></a><span class="lineno"> 1641</span>&#160;<span class="comment">      appropriate time.  This function fills in the sides[] array</span></div>
<div class="line"><a name="l01642"></a><span class="lineno"> 1642</span>&#160;<span class="comment">      with face side information.  The returned list is sorted by sides[].fi</span></div>
<div class="line"><a name="l01643"></a><span class="lineno"> 1643</span>&#160;<span class="comment">      and the sides[].side and each element has vi[0] &lt;= vi[1].  </span></div>
<div class="line"><a name="l01644"></a><span class="lineno"> 1644</span>&#160;<span class="comment">      The function ON_SortMeshFaceSidesByVertexIndex() can be used to sort the </span></div>
<div class="line"><a name="l01645"></a><span class="lineno"> 1645</span>&#160;<span class="comment">      list by the sides[].vi[] values.</span></div>
<div class="line"><a name="l01646"></a><span class="lineno"> 1646</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01647"></a><span class="lineno"> 1647</span>&#160;<span class="comment">    Number of elements added to sides[].</span></div>
<div class="line"><a name="l01648"></a><span class="lineno"> 1648</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l01649"></a><span class="lineno"> 1649</span>&#160;<span class="comment">    Faces with out of range ON_MeshFace.vi[] values are skipped. </span></div>
<div class="line"><a name="l01650"></a><span class="lineno"> 1650</span>&#160;<span class="comment">    Degenerate faces are processed, but degenerate sides (equal vertex indices)</span></div>
<div class="line"><a name="l01651"></a><span class="lineno"> 1651</span>&#160;<span class="comment">    are not added to the list.</span></div>
<div class="line"><a name="l01652"></a><span class="lineno"> 1652</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01653"></a><span class="lineno"> 1653</span>&#160;  <span class="keywordtype">int</span> GetMeshFaceSideList( </div>
<div class="line"><a name="l01654"></a><span class="lineno"> 1654</span>&#160;      <span class="keyword">const</span> <span class="keywordtype">int</span>* Vid,</div>
<div class="line"><a name="l01655"></a><span class="lineno"> 1655</span>&#160;      <span class="keyword">struct</span> <a class="code" href="struct_o_n___mesh_face_side.html">ON_MeshFaceSide</a>*&amp; sides</div>
<div class="line"><a name="l01656"></a><span class="lineno"> 1656</span>&#160;      ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01657"></a><span class="lineno"> 1657</span>&#160; </div>
<div class="line"><a name="l01658"></a><span class="lineno"> 1658</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01659"></a><span class="lineno"> 1659</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01660"></a><span class="lineno"> 1660</span>&#160;<span class="comment">    Get a list of the geometrically uniqued edges in a mesh.</span></div>
<div class="line"><a name="l01661"></a><span class="lineno"> 1661</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01662"></a><span class="lineno"> 1662</span>&#160;<span class="comment">    edge_list - [out]</span></div>
<div class="line"><a name="l01663"></a><span class="lineno"> 1663</span>&#160;<span class="comment">      The edge list for this mesh is appended to edge_list[].  </span></div>
<div class="line"><a name="l01664"></a><span class="lineno"> 1664</span>&#160;<span class="comment">      The ON_2dex i and j values are mesh-&gt;m_V[] array indices.</span></div>
<div class="line"><a name="l01665"></a><span class="lineno"> 1665</span>&#160;<span class="comment">      There is exactly one element in edge_list[] for each</span></div>
<div class="line"><a name="l01666"></a><span class="lineno"> 1666</span>&#160;<span class="comment">      unoriented 3d line segment in the mesh. The edges are </span></div>
<div class="line"><a name="l01667"></a><span class="lineno"> 1667</span>&#160;<span class="comment">      oriented the same way the corresponding ON_MeshTopology</span></div>
<div class="line"><a name="l01668"></a><span class="lineno"> 1668</span>&#160;<span class="comment">      edge is oriented.</span></div>
<div class="line"><a name="l01669"></a><span class="lineno"> 1669</span>&#160;<span class="comment">    ci_meshtop_edge_map - [out]</span></div>
<div class="line"><a name="l01670"></a><span class="lineno"> 1670</span>&#160;<span class="comment">      If you call the verson of GetMeshEdgeList() with the ci_meshtop_edge_map[],</span></div>
<div class="line"><a name="l01671"></a><span class="lineno"> 1671</span>&#160;<span class="comment">      parameter, then the edge in edge_list[i] cooresponds to the edge</span></div>
<div class="line"><a name="l01672"></a><span class="lineno"> 1672</span>&#160;<span class="comment">      in ON_MeshTopology.m_tope[ci_meshtop_edge_map[i]]. The value</span></div>
<div class="line"><a name="l01673"></a><span class="lineno"> 1673</span>&#160;<span class="comment">      ci_meshtop_edge_map[i] is useful if you need to convert an edge_list[]</span></div>
<div class="line"><a name="l01674"></a><span class="lineno"> 1674</span>&#160;<span class="comment">      index into an ON_COMPONENT_INDEX with type meshtop_edge.</span></div>
<div class="line"><a name="l01675"></a><span class="lineno"> 1675</span>&#160;<span class="comment">    ci_meshtop_vertex_map - [out]</span></div>
<div class="line"><a name="l01676"></a><span class="lineno"> 1676</span>&#160;<span class="comment">      If you call the verson of GetMeshEdgeList() with the ci_meshtop_vertex_map[],</span></div>
<div class="line"><a name="l01677"></a><span class="lineno"> 1677</span>&#160;<span class="comment">      parameter, then the vertex m_V[i] cooresponds to the vertex</span></div>
<div class="line"><a name="l01678"></a><span class="lineno"> 1678</span>&#160;<span class="comment">      in ON_MeshTopology.m_topv[ci_meshtop_vertex_map[i]]. The value</span></div>
<div class="line"><a name="l01679"></a><span class="lineno"> 1679</span>&#160;<span class="comment">      ci_meshtop_vertex_map[i] is useful if you need to convert an m_V[]</span></div>
<div class="line"><a name="l01680"></a><span class="lineno"> 1680</span>&#160;<span class="comment">      index into an ON_COMPONENT_INDEX with type meshtop_vertex.</span></div>
<div class="line"><a name="l01681"></a><span class="lineno"> 1681</span>&#160;<span class="comment">    edge_list_partition - [out] (can be null)</span></div>
<div class="line"><a name="l01682"></a><span class="lineno"> 1682</span>&#160;<span class="comment">      The edge_list[] is always ordered so that edge_types</span></div>
<div class="line"><a name="l01683"></a><span class="lineno"> 1683</span>&#160;<span class="comment">      are partitioned into contiguous regions. The edge_list_partition[5]</span></div>
<div class="line"><a name="l01684"></a><span class="lineno"> 1684</span>&#160;<span class="comment">      values report the edge type regions.</span></div>
<div class="line"><a name="l01685"></a><span class="lineno"> 1685</span>&#160;<span class="comment">      * If edge_type_partition[0] &lt;= ei &lt; edge_type_partition[1], then</span></div>
<div class="line"><a name="l01686"></a><span class="lineno"> 1686</span>&#160;<span class="comment">        edge_list[ei] is an edge of exactly two faces and the vertices</span></div>
<div class="line"><a name="l01687"></a><span class="lineno"> 1687</span>&#160;<span class="comment">        used by the faces are identical.  These are also called</span></div>
<div class="line"><a name="l01688"></a><span class="lineno"> 1688</span>&#160;<span class="comment">        &quot;manifold edges&quot;.</span></div>
<div class="line"><a name="l01689"></a><span class="lineno"> 1689</span>&#160;<span class="comment">      * If edge_type_partition[1] &lt;= ei &lt; edge_type_partition[2], then</span></div>
<div class="line"><a name="l01690"></a><span class="lineno"> 1690</span>&#160;<span class="comment">        edge_list[ei] is an edge of exactly two faces, but at least</span></div>
<div class="line"><a name="l01691"></a><span class="lineno"> 1691</span>&#160;<span class="comment">        one of the vertices is duplicated.  These are also called</span></div>
<div class="line"><a name="l01692"></a><span class="lineno"> 1692</span>&#160;<span class="comment">        &quot;crease edges&quot;.</span></div>
<div class="line"><a name="l01693"></a><span class="lineno"> 1693</span>&#160;<span class="comment">      * If edge_type_partition[2] &lt;= ei &lt; edge_type_partition[3], then</span></div>
<div class="line"><a name="l01694"></a><span class="lineno"> 1694</span>&#160;<span class="comment">        edge_list[ei] is an edge of 3 or more faces. These are also called</span></div>
<div class="line"><a name="l01695"></a><span class="lineno"> 1695</span>&#160;<span class="comment">        &quot;nonmanifold edges&quot;.</span></div>
<div class="line"><a name="l01696"></a><span class="lineno"> 1696</span>&#160;<span class="comment">      * If edge_type_partition[3] &lt;= ei &lt; edge_type_partition[4], </span></div>
<div class="line"><a name="l01697"></a><span class="lineno"> 1697</span>&#160;<span class="comment">        then edge_list[ei] is a boundary edge of exactly one mesh face.</span></div>
<div class="line"><a name="l01698"></a><span class="lineno"> 1698</span>&#160;<span class="comment">        These are also called &quot;naked edges&quot;.</span></div>
<div class="line"><a name="l01699"></a><span class="lineno"> 1699</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01700"></a><span class="lineno"> 1700</span>&#160;<span class="comment">    Number of edges added to edge_list[].</span></div>
<div class="line"><a name="l01701"></a><span class="lineno"> 1701</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l01702"></a><span class="lineno"> 1702</span>&#160;<span class="comment">    This calculation also sets m_closed.  If you modify the mesh&#39;s</span></div>
<div class="line"><a name="l01703"></a><span class="lineno"> 1703</span>&#160;<span class="comment">    m_V or m_F information after calling this function, be sure to</span></div>
<div class="line"><a name="l01704"></a><span class="lineno"> 1704</span>&#160;<span class="comment">    clear m_is_closed.</span></div>
<div class="line"><a name="l01705"></a><span class="lineno"> 1705</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01706"></a><span class="lineno"> 1706</span>&#160;  <span class="keywordtype">int</span> GetMeshEdgeList( </div>
<div class="line"><a name="l01707"></a><span class="lineno"> 1707</span>&#160;      <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_2dex&gt;</a>&amp; edge_list, </div>
<div class="line"><a name="l01708"></a><span class="lineno"> 1708</span>&#160;      <span class="keywordtype">int</span> edge_type_partition[5] </div>
<div class="line"><a name="l01709"></a><span class="lineno"> 1709</span>&#160;      ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01710"></a><span class="lineno"> 1710</span>&#160; </div>
<div class="line"><a name="l01711"></a><span class="lineno"> 1711</span>&#160;  <span class="keywordtype">int</span> GetMeshEdgeList( </div>
<div class="line"><a name="l01712"></a><span class="lineno"> 1712</span>&#160;      <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_2dex&gt;</a>&amp; edge_list, </div>
<div class="line"><a name="l01713"></a><span class="lineno"> 1713</span>&#160;      <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;int&gt;</a>&amp; ci_meshtop_edge_map,</div>
<div class="line"><a name="l01714"></a><span class="lineno"> 1714</span>&#160;      <span class="keywordtype">int</span> edge_type_partition[5] </div>
<div class="line"><a name="l01715"></a><span class="lineno"> 1715</span>&#160;      ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01716"></a><span class="lineno"> 1716</span>&#160; </div>
<div class="line"><a name="l01717"></a><span class="lineno"> 1717</span>&#160;  <span class="keywordtype">int</span> GetMeshEdgeList( </div>
<div class="line"><a name="l01718"></a><span class="lineno"> 1718</span>&#160;      <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_2dex&gt;</a>&amp; edge_list, </div>
<div class="line"><a name="l01719"></a><span class="lineno"> 1719</span>&#160;      <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;int&gt;</a>&amp; ci_meshtop_edge_map,</div>
<div class="line"><a name="l01720"></a><span class="lineno"> 1720</span>&#160;      <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;int&gt;</a>&amp; ci_meshtop_vertex_map,</div>
<div class="line"><a name="l01721"></a><span class="lineno"> 1721</span>&#160;      <span class="keywordtype">int</span> edge_type_partition[5] </div>
<div class="line"><a name="l01722"></a><span class="lineno"> 1722</span>&#160;      ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01723"></a><span class="lineno"> 1723</span>&#160; </div>
<div class="line"><a name="l01725"></a><span class="lineno"> 1725</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l01726"></a><span class="lineno"> 1726</span>&#160;  <span class="comment">// mesh editing</span></div>
<div class="line"><a name="l01727"></a><span class="lineno"> 1727</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l01728"></a><span class="lineno"> 1728</span>&#160; </div>
<div class="line"><a name="l01729"></a><span class="lineno"> 1729</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01730"></a><span class="lineno"> 1730</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01731"></a><span class="lineno"> 1731</span>&#160;<span class="comment">    Replace a mesh edge with a vertex at its center and update</span></div>
<div class="line"><a name="l01732"></a><span class="lineno"> 1732</span>&#160;<span class="comment">    adjacent faces as needed.</span></div>
<div class="line"><a name="l01733"></a><span class="lineno"> 1733</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01734"></a><span class="lineno"> 1734</span>&#160;<span class="comment">    topei - [in] index of edge in MeshTopology().m_tope[] array</span></div>
<div class="line"><a name="l01735"></a><span class="lineno"> 1735</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01736"></a><span class="lineno"> 1736</span>&#160;<span class="comment">    true if successful.</span></div>
<div class="line"><a name="l01737"></a><span class="lineno"> 1737</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01738"></a><span class="lineno"> 1738</span>&#160;  <span class="keywordtype">bool</span> CollapseEdge( <span class="keywordtype">int</span> topei );</div>
<div class="line"><a name="l01739"></a><span class="lineno"> 1739</span>&#160; </div>
<div class="line"><a name="l01740"></a><span class="lineno"> 1740</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01741"></a><span class="lineno"> 1741</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01742"></a><span class="lineno"> 1742</span>&#160;<span class="comment">    Tests a mesh edge to see if it is valid as input to</span></div>
<div class="line"><a name="l01743"></a><span class="lineno"> 1743</span>&#160;<span class="comment">    ON_Mesh::SwapMeshEdge.</span></div>
<div class="line"><a name="l01744"></a><span class="lineno"> 1744</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01745"></a><span class="lineno"> 1745</span>&#160;<span class="comment">    topei - [in] index of edge in MeshTopology().m_tope[] array</span></div>
<div class="line"><a name="l01746"></a><span class="lineno"> 1746</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01747"></a><span class="lineno"> 1747</span>&#160;<span class="comment">    true if edge can be swapped by ON_Mesh::SwapMeshEdge.</span></div>
<div class="line"><a name="l01748"></a><span class="lineno"> 1748</span>&#160;<span class="comment">  See Also:</span></div>
<div class="line"><a name="l01749"></a><span class="lineno"> 1749</span>&#160;<span class="comment">    ON_Mesh::SwapEdge</span></div>
<div class="line"><a name="l01750"></a><span class="lineno"> 1750</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01751"></a><span class="lineno"> 1751</span>&#160;  <span class="keywordtype">bool</span> IsSwappableEdge( <span class="keywordtype">int</span> topei );</div>
<div class="line"><a name="l01752"></a><span class="lineno"> 1752</span>&#160; </div>
<div class="line"><a name="l01753"></a><span class="lineno"> 1753</span>&#160; </div>
<div class="line"><a name="l01754"></a><span class="lineno"> 1754</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01755"></a><span class="lineno"> 1755</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01756"></a><span class="lineno"> 1756</span>&#160;<span class="comment">    If the edge is shared by two triangular face, then</span></div>
<div class="line"><a name="l01757"></a><span class="lineno"> 1757</span>&#160;<span class="comment">    the edge is &quot;swapped&quot;.</span></div>
<div class="line"><a name="l01758"></a><span class="lineno"> 1758</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01759"></a><span class="lineno"> 1759</span>&#160;<span class="comment">    topei - [in] index of edge in MeshTopology().m_tope[] array</span></div>
<div class="line"><a name="l01760"></a><span class="lineno"> 1760</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01761"></a><span class="lineno"> 1761</span>&#160;<span class="comment">    true if successful</span></div>
<div class="line"><a name="l01762"></a><span class="lineno"> 1762</span>&#160;<span class="comment">  See Also:</span></div>
<div class="line"><a name="l01763"></a><span class="lineno"> 1763</span>&#160;<span class="comment">    ON_Mesh::IsSwappableEdge</span></div>
<div class="line"><a name="l01764"></a><span class="lineno"> 1764</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01765"></a><span class="lineno"> 1765</span>&#160;  <span class="keywordtype">bool</span> SwapEdge( <span class="keywordtype">int</span> topei );</div>
<div class="line"><a name="l01766"></a><span class="lineno"> 1766</span>&#160; </div>
<div class="line"><a name="l01767"></a><span class="lineno"> 1767</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01768"></a><span class="lineno"> 1768</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01769"></a><span class="lineno"> 1769</span>&#160;<span class="comment">    Removes a face from a mesh and does not alter the</span></div>
<div class="line"><a name="l01770"></a><span class="lineno"> 1770</span>&#160;<span class="comment">    geometry of the remaining mesh.</span></div>
<div class="line"><a name="l01771"></a><span class="lineno"> 1771</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01772"></a><span class="lineno"> 1772</span>&#160;<span class="comment">    meshfi - [in] index of face in ON_Mesh.m_F[] array</span></div>
<div class="line"><a name="l01773"></a><span class="lineno"> 1773</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l01774"></a><span class="lineno"> 1774</span>&#160;<span class="comment">    This function calls DestroyTopology() and DestroyPartition().</span></div>
<div class="line"><a name="l01775"></a><span class="lineno"> 1775</span>&#160;<span class="comment">    The caller is responsible for calling Compact() if that step</span></div>
<div class="line"><a name="l01776"></a><span class="lineno"> 1776</span>&#160;<span class="comment">    is required.</span></div>
<div class="line"><a name="l01777"></a><span class="lineno"> 1777</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01778"></a><span class="lineno"> 1778</span>&#160;<span class="comment">    true if successful</span></div>
<div class="line"><a name="l01779"></a><span class="lineno"> 1779</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01780"></a><span class="lineno"> 1780</span>&#160;  <span class="keywordtype">bool</span> DeleteFace( <span class="keywordtype">int</span> meshfi );</div>
<div class="line"><a name="l01781"></a><span class="lineno"> 1781</span>&#160; </div>
<div class="line"><a name="l01782"></a><span class="lineno"> 1782</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01783"></a><span class="lineno"> 1783</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01784"></a><span class="lineno"> 1784</span>&#160;<span class="comment">    Destroys the m_H[] array and sets m_hidden_count=0.</span></div>
<div class="line"><a name="l01785"></a><span class="lineno"> 1785</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01786"></a><span class="lineno"> 1786</span>&#160;  <span class="keywordtype">void</span> DestroyHiddenVertexArray();</div>
<div class="line"><a name="l01787"></a><span class="lineno"> 1787</span>&#160; </div>
<div class="line"><a name="l01788"></a><span class="lineno"> 1788</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01789"></a><span class="lineno"> 1789</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01790"></a><span class="lineno"> 1790</span>&#160;<span class="comment">    If the mesh has some hidden vertices, then an array</span></div>
<div class="line"><a name="l01791"></a><span class="lineno"> 1791</span>&#160;<span class="comment">    of length VertexCount() is returned and the i-th</span></div>
<div class="line"><a name="l01792"></a><span class="lineno"> 1792</span>&#160;<span class="comment">    element is true if the i-th vertex is hidden.</span></div>
<div class="line"><a name="l01793"></a><span class="lineno"> 1793</span>&#160;<span class="comment">    If no vertices are hidden, NULL is returned.</span></div>
<div class="line"><a name="l01794"></a><span class="lineno"> 1794</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01795"></a><span class="lineno"> 1795</span>&#160;  <span class="keyword">const</span> <span class="keywordtype">bool</span>* HiddenVertexArray() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01796"></a><span class="lineno"> 1796</span>&#160; </div>
<div class="line"><a name="l01797"></a><span class="lineno"> 1797</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01798"></a><span class="lineno"> 1798</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01799"></a><span class="lineno"> 1799</span>&#160;<span class="comment">    Set the runtime vertex hidden flag.</span></div>
<div class="line"><a name="l01800"></a><span class="lineno"> 1800</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01801"></a><span class="lineno"> 1801</span>&#160;<span class="comment">    meshvi - [in] mesh vertex index</span></div>
<div class="line"><a name="l01802"></a><span class="lineno"> 1802</span>&#160;<span class="comment">    bHidden - [in] true to hide vertex</span></div>
<div class="line"><a name="l01803"></a><span class="lineno"> 1803</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01804"></a><span class="lineno"> 1804</span>&#160;  <span class="keywordtype">void</span> SetVertexHiddenFlag( <span class="keywordtype">int</span> meshvi, <span class="keywordtype">bool</span> bHidden );</div>
<div class="line"><a name="l01805"></a><span class="lineno"> 1805</span>&#160; </div>
<div class="line"><a name="l01806"></a><span class="lineno"> 1806</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01807"></a><span class="lineno"> 1807</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01808"></a><span class="lineno"> 1808</span>&#160;<span class="comment">    Returns true if the mesh vertex is hidden.  This is a runtime</span></div>
<div class="line"><a name="l01809"></a><span class="lineno"> 1809</span>&#160;<span class="comment">    setting that is not saved in 3dm files.</span></div>
<div class="line"><a name="l01810"></a><span class="lineno"> 1810</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01811"></a><span class="lineno"> 1811</span>&#160;<span class="comment">    meshvi - [in] mesh vertex index.</span></div>
<div class="line"><a name="l01812"></a><span class="lineno"> 1812</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01813"></a><span class="lineno"> 1813</span>&#160;<span class="comment">    True if mesh vertex is hidden.</span></div>
<div class="line"><a name="l01814"></a><span class="lineno"> 1814</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01815"></a><span class="lineno"> 1815</span>&#160;  <span class="keywordtype">bool</span> VertexIsHidden( <span class="keywordtype">int</span> meshvi ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01816"></a><span class="lineno"> 1816</span>&#160; </div>
<div class="line"><a name="l01817"></a><span class="lineno"> 1817</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01818"></a><span class="lineno"> 1818</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01819"></a><span class="lineno"> 1819</span>&#160;<span class="comment">    Returns true if the mesh face is hidden.  This is a runtime</span></div>
<div class="line"><a name="l01820"></a><span class="lineno"> 1820</span>&#160;<span class="comment">    setting that is not saved in 3dm files.</span></div>
<div class="line"><a name="l01821"></a><span class="lineno"> 1821</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01822"></a><span class="lineno"> 1822</span>&#160;<span class="comment">    meshfi - [in] mesh face index.</span></div>
<div class="line"><a name="l01823"></a><span class="lineno"> 1823</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01824"></a><span class="lineno"> 1824</span>&#160;<span class="comment">    True if mesh face is hidden.</span></div>
<div class="line"><a name="l01825"></a><span class="lineno"> 1825</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l01826"></a><span class="lineno"> 1826</span>&#160;<span class="comment">    A face is hidden if, and only if, at least one of its</span></div>
<div class="line"><a name="l01827"></a><span class="lineno"> 1827</span>&#160;<span class="comment">    vertices is hidden.</span></div>
<div class="line"><a name="l01828"></a><span class="lineno"> 1828</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01829"></a><span class="lineno"> 1829</span>&#160;  <span class="keywordtype">bool</span> FaceIsHidden( <span class="keywordtype">int</span> meshvi ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01830"></a><span class="lineno"> 1830</span>&#160; </div>
<div class="line"><a name="l01831"></a><span class="lineno"> 1831</span>&#160; </div>
<div class="line"><a name="l01833"></a><span class="lineno"> 1833</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l01834"></a><span class="lineno"> 1834</span>&#160;  <span class="comment">// mesh topology</span></div>
<div class="line"><a name="l01835"></a><span class="lineno"> 1835</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l01836"></a><span class="lineno"> 1836</span>&#160;  <span class="comment">// In order to keep the mesh facet definition simple and make the mesh</span></div>
<div class="line"><a name="l01837"></a><span class="lineno"> 1837</span>&#160;  <span class="comment">// definition easily used in common rendering application, if two facets</span></div>
<div class="line"><a name="l01838"></a><span class="lineno"> 1838</span>&#160;  <span class="comment">// share a vertex location but have different normals, curvatures, </span></div>
<div class="line"><a name="l01839"></a><span class="lineno"> 1839</span>&#160;  <span class="comment">// textures, etc., at that common vertex location, then the vertex is</span></div>
<div class="line"><a name="l01840"></a><span class="lineno"> 1840</span>&#160;  <span class="comment">// duplicated.  When the topology of the mesh needs to be known,</span></div>
<div class="line"><a name="l01841"></a><span class="lineno"> 1841</span>&#160;  <span class="comment">// use Topology() to get a class that provides complete topological</span></div>
<div class="line"><a name="l01842"></a><span class="lineno"> 1842</span>&#160;  <span class="comment">// information about the mesh.</span></div>
<div class="line"><a name="l01843"></a><span class="lineno"> 1843</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___mesh_topology.html">ON_MeshTopology</a>&amp; Topology() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01844"></a><span class="lineno"> 1844</span>&#160; </div>
<div class="line"><a name="l01846"></a><span class="lineno"> 1846</span>&#160;  <span class="comment">// If you modify the mesh in any way that may change its topology,</span></div>
<div class="line"><a name="l01847"></a><span class="lineno"> 1847</span>&#160;  <span class="comment">// then call DestroyTopology().  Specifically if you add or remove</span></div>
<div class="line"><a name="l01848"></a><span class="lineno"> 1848</span>&#160;  <span class="comment">// vertices or face, change vertex locations, or change the face m_vi[]</span></div>
<div class="line"><a name="l01849"></a><span class="lineno"> 1849</span>&#160;  <span class="comment">// values, then you must call DestroyTopology().</span></div>
<div class="line"><a name="l01850"></a><span class="lineno"> 1850</span>&#160;  <span class="keywordtype">void</span> DestroyTopology();</div>
<div class="line"><a name="l01851"></a><span class="lineno"> 1851</span>&#160; </div>
<div class="line"><a name="l01852"></a><span class="lineno"> 1852</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01853"></a><span class="lineno"> 1853</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01854"></a><span class="lineno"> 1854</span>&#160;<span class="comment">    This is an expert user function that returns true if the topology</span></div>
<div class="line"><a name="l01855"></a><span class="lineno"> 1855</span>&#160;<span class="comment">    information is already calculated and cached.  It can be used to</span></div>
<div class="line"><a name="l01856"></a><span class="lineno"> 1856</span>&#160;<span class="comment">    to avoid calling the Topology() function when the expensive creation</span></div>
<div class="line"><a name="l01857"></a><span class="lineno"> 1857</span>&#160;<span class="comment">    step will be performed.</span></div>
<div class="line"><a name="l01858"></a><span class="lineno"> 1858</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01859"></a><span class="lineno"> 1859</span>&#160;  <span class="keywordtype">bool</span> TopologyExists() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01860"></a><span class="lineno"> 1860</span>&#160; </div>
<div class="line"><a name="l01861"></a><span class="lineno"> 1861</span>&#160; </div>
<div class="line"><a name="l01863"></a><span class="lineno"> 1863</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l01864"></a><span class="lineno"> 1864</span>&#160;  <span class="comment">// mesh partitions</span></div>
<div class="line"><a name="l01865"></a><span class="lineno"> 1865</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l01866"></a><span class="lineno"> 1866</span>&#160;  <span class="comment">// In ancient times, some rendering engines were only able to process</span></div>
<div class="line"><a name="l01867"></a><span class="lineno"> 1867</span>&#160;  <span class="comment">// small batches of triangles and th CreatePartition() function was</span></div>
<div class="line"><a name="l01868"></a><span class="lineno"> 1868</span>&#160;  <span class="comment">// provided to partition the mesh into subsets of vertices and faces</span></div>
<div class="line"><a name="l01869"></a><span class="lineno"> 1869</span>&#160;  <span class="comment">// that those renering engines could handle.</span></div>
<div class="line"><a name="l01870"></a><span class="lineno"> 1870</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l01871"></a><span class="lineno"> 1871</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___mesh_partition.html">ON_MeshPartition</a>* CreatePartition( </div>
<div class="line"><a name="l01872"></a><span class="lineno"> 1872</span>&#160;                <span class="keywordtype">int</span>, <span class="comment">// maximum number of vertices in a partition</span></div>
<div class="line"><a name="l01873"></a><span class="lineno"> 1873</span>&#160;                <span class="keywordtype">int</span>  <span class="comment">// maximum number of triangles in a partition</span></div>
<div class="line"><a name="l01874"></a><span class="lineno"> 1874</span>&#160;                );</div>
<div class="line"><a name="l01875"></a><span class="lineno"> 1875</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___mesh_partition.html">ON_MeshPartition</a>* Partition() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01876"></a><span class="lineno"> 1876</span>&#160;  <span class="keywordtype">void</span> DestroyPartition();</div>
<div class="line"><a name="l01877"></a><span class="lineno"> 1877</span>&#160; </div>
<div class="line"><a name="l01878"></a><span class="lineno"> 1878</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01879"></a><span class="lineno"> 1879</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01880"></a><span class="lineno"> 1880</span>&#160;<span class="comment">    Extract the portion of this mesh defined by mesh_part.</span></div>
<div class="line"><a name="l01881"></a><span class="lineno"> 1881</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01882"></a><span class="lineno"> 1882</span>&#160;<span class="comment">    mesh_part - [in]</span></div>
<div class="line"><a name="l01883"></a><span class="lineno"> 1883</span>&#160;<span class="comment">      defines portion of the mesh to extract.</span></div>
<div class="line"><a name="l01884"></a><span class="lineno"> 1884</span>&#160;<span class="comment">    mesh - [in] (can be null, cannot be = &quot;this).</span></div>
<div class="line"><a name="l01885"></a><span class="lineno"> 1885</span>&#160;<span class="comment">      If mesh is no null, the extracted mesh will be put into</span></div>
<div class="line"><a name="l01886"></a><span class="lineno"> 1886</span>&#160;<span class="comment">      this mesh.  If mesh is null, the extracted mesh will</span></div>
<div class="line"><a name="l01887"></a><span class="lineno"> 1887</span>&#160;<span class="comment">      be created in a mesh allocated on the heap using the</span></div>
<div class="line"><a name="l01888"></a><span class="lineno"> 1888</span>&#160;<span class="comment">      new operator.</span></div>
<div class="line"><a name="l01889"></a><span class="lineno"> 1889</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01890"></a><span class="lineno"> 1890</span>&#160;<span class="comment">    A pointer to the submesh.  If the input mesh parameter is null,</span></div>
<div class="line"><a name="l01891"></a><span class="lineno"> 1891</span>&#160;<span class="comment">    then the caller must delete this mesh when it is no longer needed.</span></div>
<div class="line"><a name="l01892"></a><span class="lineno"> 1892</span>&#160;<span class="comment">    If the input is invalid, then null is returned.</span></div>
<div class="line"><a name="l01893"></a><span class="lineno"> 1893</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01894"></a><span class="lineno"> 1894</span>&#160;  <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>* MeshPart( </div>
<div class="line"><a name="l01895"></a><span class="lineno"> 1895</span>&#160;    <span class="keyword">const</span> <a class="code" href="struct_o_n___mesh_part.html">ON_MeshPart</a>&amp; mesh_part,</div>
<div class="line"><a name="l01896"></a><span class="lineno"> 1896</span>&#160;    <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>* mesh </div>
<div class="line"><a name="l01897"></a><span class="lineno"> 1897</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01898"></a><span class="lineno"> 1898</span>&#160; </div>
<div class="line"><a name="l01899"></a><span class="lineno"> 1899</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01900"></a><span class="lineno"> 1900</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01901"></a><span class="lineno"> 1901</span>&#160;<span class="comment">    Create a mesh that is a single face of this mesh.</span></div>
<div class="line"><a name="l01902"></a><span class="lineno"> 1902</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l01903"></a><span class="lineno"> 1903</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01904"></a><span class="lineno"> 1904</span>&#160;<span class="comment">    A pointer to the submesh.  If the input mesh parameter is null,</span></div>
<div class="line"><a name="l01905"></a><span class="lineno"> 1905</span>&#160;<span class="comment">    then the caller must delete this mesh when it is no longer needed.</span></div>
<div class="line"><a name="l01906"></a><span class="lineno"> 1906</span>&#160;<span class="comment">    If the input is invalid, then null is returned.</span></div>
<div class="line"><a name="l01907"></a><span class="lineno"> 1907</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01908"></a><span class="lineno"> 1908</span>&#160;  <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>* DuplicateFace( </div>
<div class="line"><a name="l01909"></a><span class="lineno"> 1909</span>&#160;    <span class="keywordtype">int</span> face_index,</div>
<div class="line"><a name="l01910"></a><span class="lineno"> 1910</span>&#160;    <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>* mesh </div>
<div class="line"><a name="l01911"></a><span class="lineno"> 1911</span>&#160;    ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01912"></a><span class="lineno"> 1912</span>&#160; </div>
<div class="line"><a name="l01914"></a><span class="lineno"> 1914</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l01915"></a><span class="lineno"> 1915</span>&#160;  <span class="comment">// mesh N-gon lists.  </span></div>
<div class="line"><a name="l01916"></a><span class="lineno"> 1916</span>&#160;  <span class="comment">//   ON_Mesh objects support faces that are triangle or quads.</span></div>
<div class="line"><a name="l01917"></a><span class="lineno"> 1917</span>&#160;  <span class="comment">//   When a mesh is created from a format that supports N-gons</span></div>
<div class="line"><a name="l01918"></a><span class="lineno"> 1918</span>&#160;  <span class="comment">//   for N larger than 4, an optional N-gon list can be added </span></div>
<div class="line"><a name="l01919"></a><span class="lineno"> 1919</span>&#160;  <span class="comment">//   that specifies the vertices and faces that make up the N-gon.</span></div>
<div class="line"><a name="l01920"></a><span class="lineno"> 1920</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l01921"></a><span class="lineno"> 1921</span>&#160; </div>
<div class="line"><a name="l01922"></a><span class="lineno"> 1922</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01923"></a><span class="lineno"> 1923</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01924"></a><span class="lineno"> 1924</span>&#160;<span class="comment">    If the mesh has an N-gon list, return a pointer to it.</span></div>
<div class="line"><a name="l01925"></a><span class="lineno"> 1925</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01926"></a><span class="lineno"> 1926</span>&#160;<span class="comment">    A pointer to the current N-gon list or NULL.</span></div>
<div class="line"><a name="l01927"></a><span class="lineno"> 1927</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01928"></a><span class="lineno"> 1928</span>&#160;  <span class="keyword">const</span> <span class="keyword">class </span><a class="code" href="class_o_n___mesh_ngon_list.html">ON_MeshNgonList</a>* NgonList() <span class="keyword">const</span>;</div>
<div class="line"><a name="l01929"></a><span class="lineno"> 1929</span>&#160; </div>
<div class="line"><a name="l01930"></a><span class="lineno"> 1930</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01931"></a><span class="lineno"> 1931</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01932"></a><span class="lineno"> 1932</span>&#160;<span class="comment">    If an N-gon list exists, it is returned and can be modified.</span></div>
<div class="line"><a name="l01933"></a><span class="lineno"> 1933</span>&#160;<span class="comment">    If no N-gon list exists, a new empty list is returned and</span></div>
<div class="line"><a name="l01934"></a><span class="lineno"> 1934</span>&#160;<span class="comment">    it can be modified.</span></div>
<div class="line"><a name="l01935"></a><span class="lineno"> 1935</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l01936"></a><span class="lineno"> 1936</span>&#160;<span class="comment">    A pointer to the N-gon list that can be modified.</span></div>
<div class="line"><a name="l01937"></a><span class="lineno"> 1937</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01938"></a><span class="lineno"> 1938</span>&#160;  <span class="keyword">class </span><a class="code" href="class_o_n___mesh_ngon_list.html">ON_MeshNgonList</a>* ModifyNgonList();</div>
<div class="line"><a name="l01939"></a><span class="lineno"> 1939</span>&#160; </div>
<div class="line"><a name="l01940"></a><span class="lineno"> 1940</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01941"></a><span class="lineno"> 1941</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l01942"></a><span class="lineno"> 1942</span>&#160;<span class="comment">    Destroy any existing N-gon list.</span></div>
<div class="line"><a name="l01943"></a><span class="lineno"> 1943</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01944"></a><span class="lineno"> 1944</span>&#160;  <span class="keywordtype">void</span> DestroyNgonList();</div>
<div class="line"><a name="l01945"></a><span class="lineno"> 1945</span>&#160; </div>
<div class="line"><a name="l01947"></a><span class="lineno"> 1947</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l01948"></a><span class="lineno"> 1948</span>&#160;  <span class="comment">// mesh components</span></div>
<div class="line"><a name="l01949"></a><span class="lineno"> 1949</span>&#160;  <span class="comment">//   ON_Mesh objects can consist of sets of faces that are isolated</span></div>
<div class="line"><a name="l01950"></a><span class="lineno"> 1950</span>&#160;  <span class="comment">//   from any other sets of faces.  The following 2 functions will</span></div>
<div class="line"><a name="l01951"></a><span class="lineno"> 1951</span>&#160;  <span class="comment">//   dissect a mesh into these sets, called components.  Not to be </span></div>
<div class="line"><a name="l01952"></a><span class="lineno"> 1952</span>&#160;  <span class="comment">//   confused with ON_COMPONENT_INDEX.</span></div>
<div class="line"><a name="l01953"></a><span class="lineno"> 1953</span>&#160; </div>
<div class="line"><a name="l01954"></a><span class="lineno"> 1954</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01955"></a><span class="lineno"> 1955</span>&#160;<span class="comment">    Description:</span></div>
<div class="line"><a name="l01956"></a><span class="lineno"> 1956</span>&#160;<span class="comment">      Calculates the components of a mesh and sets a label for each face in</span></div>
<div class="line"><a name="l01957"></a><span class="lineno"> 1957</span>&#160;<span class="comment">      the facet_component_labels array.</span></div>
<div class="line"><a name="l01958"></a><span class="lineno"> 1958</span>&#160;<span class="comment">    Parameters:</span></div>
<div class="line"><a name="l01959"></a><span class="lineno"> 1959</span>&#160;<span class="comment">      bUseVertexConnections- [in]</span></div>
<div class="line"><a name="l01960"></a><span class="lineno"> 1960</span>&#160;<span class="comment">        If this parameter is true, then facets that share a common vertex</span></div>
<div class="line"><a name="l01961"></a><span class="lineno"> 1961</span>&#160;<span class="comment">        are considered connected.</span></div>
<div class="line"><a name="l01962"></a><span class="lineno"> 1962</span>&#160;<span class="comment">        If this parameter is false, then facets must share an edge to</span></div>
<div class="line"><a name="l01963"></a><span class="lineno"> 1963</span>&#160;<span class="comment">        be considered connected.</span></div>
<div class="line"><a name="l01964"></a><span class="lineno"> 1964</span>&#160;<span class="comment">      bUseTopologicalConnections - [in]</span></div>
<div class="line"><a name="l01965"></a><span class="lineno"> 1965</span>&#160;<span class="comment">        If this parameter is true, then geometric location is used</span></div>
<div class="line"><a name="l01966"></a><span class="lineno"> 1966</span>&#160;<span class="comment">        to determine if facets are connected. </span></div>
<div class="line"><a name="l01967"></a><span class="lineno"> 1967</span>&#160;<span class="comment">        If this parameter is false, then facets must share the same vertex </span></div>
<div class="line"><a name="l01968"></a><span class="lineno"> 1968</span>&#160;<span class="comment">        or vertices to be considered connected.</span></div>
<div class="line"><a name="l01969"></a><span class="lineno"> 1969</span>&#160;<span class="comment">      facet_component_labels- [out]</span></div>
<div class="line"><a name="l01970"></a><span class="lineno"> 1970</span>&#160;<span class="comment">        facet_component_labels[] will be an array with the same size</span></div>
<div class="line"><a name="l01971"></a><span class="lineno"> 1971</span>&#160;<span class="comment">        as ON_Mesh.m_F.Count() and facet_component_labels[i]</span></div>
<div class="line"><a name="l01972"></a><span class="lineno"> 1972</span>&#160;<span class="comment">        is the component id m_F[i] belongs to.  The component id</span></div>
<div class="line"><a name="l01973"></a><span class="lineno"> 1973</span>&#160;<span class="comment">        will be 1 to the number of compoents.</span></div>
<div class="line"><a name="l01974"></a><span class="lineno"> 1974</span>&#160;<span class="comment">    Returns:</span></div>
<div class="line"><a name="l01975"></a><span class="lineno"> 1975</span>&#160;<span class="comment">      Number of components on success, 0 on failure </span></div>
<div class="line"><a name="l01976"></a><span class="lineno"> 1976</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l01977"></a><span class="lineno"> 1977</span>&#160; </div>
<div class="line"><a name="l01978"></a><span class="lineno"> 1978</span>&#160;  <span class="keywordtype">int</span> GetConnectedComponents( <span class="keywordtype">bool</span> bUseVertexConnections, </div>
<div class="line"><a name="l01979"></a><span class="lineno"> 1979</span>&#160;                              <span class="keywordtype">bool</span> bTopologicalConnections, </div>
<div class="line"><a name="l01980"></a><span class="lineno"> 1980</span>&#160;                              <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;int&gt;</a>&amp; facet_component_labels</div>
<div class="line"><a name="l01981"></a><span class="lineno"> 1981</span>&#160;                            ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l01982"></a><span class="lineno"> 1982</span>&#160; </div>
<div class="line"><a name="l01983"></a><span class="lineno"> 1983</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l01984"></a><span class="lineno"> 1984</span>&#160;<span class="comment">    Description:</span></div>
<div class="line"><a name="l01985"></a><span class="lineno"> 1985</span>&#160;<span class="comment">      Calculates the components of a mesh and sets a label for each face in</span></div>
<div class="line"><a name="l01986"></a><span class="lineno"> 1986</span>&#160;<span class="comment">      the facet_component_labels array.</span></div>
<div class="line"><a name="l01987"></a><span class="lineno"> 1987</span>&#160;<span class="comment">    Parameters:</span></div>
<div class="line"><a name="l01988"></a><span class="lineno"> 1988</span>&#160;<span class="comment">      bUseVertexConnections- [in]</span></div>
<div class="line"><a name="l01989"></a><span class="lineno"> 1989</span>&#160;<span class="comment">        If this parameter is true, then facets that share a common vertex</span></div>
<div class="line"><a name="l01990"></a><span class="lineno"> 1990</span>&#160;<span class="comment">        are considered connected.</span></div>
<div class="line"><a name="l01991"></a><span class="lineno"> 1991</span>&#160;<span class="comment">        If this parameter is false, then facets must share an edge to</span></div>
<div class="line"><a name="l01992"></a><span class="lineno"> 1992</span>&#160;<span class="comment">        be considered connected.</span></div>
<div class="line"><a name="l01993"></a><span class="lineno"> 1993</span>&#160;<span class="comment">      bUseTopologicalConnections - [in]</span></div>
<div class="line"><a name="l01994"></a><span class="lineno"> 1994</span>&#160;<span class="comment">        If this parameter is true, then geometric location is used</span></div>
<div class="line"><a name="l01995"></a><span class="lineno"> 1995</span>&#160;<span class="comment">        to determine if facets are connected. </span></div>
<div class="line"><a name="l01996"></a><span class="lineno"> 1996</span>&#160;<span class="comment">        If this parameter is false, then facets must share the same vertex </span></div>
<div class="line"><a name="l01997"></a><span class="lineno"> 1997</span>&#160;<span class="comment">        or vertices to be considered connected.</span></div>
<div class="line"><a name="l01998"></a><span class="lineno"> 1998</span>&#160;<span class="comment">      components   - [out]</span></div>
<div class="line"><a name="l01999"></a><span class="lineno"> 1999</span>&#160;<span class="comment">        New components are appended to this array</span></div>
<div class="line"><a name="l02000"></a><span class="lineno"> 2000</span>&#160;<span class="comment">        if this parameter is null, then the components are just counted.</span></div>
<div class="line"><a name="l02001"></a><span class="lineno"> 2001</span>&#160;<span class="comment">    Returns:</span></div>
<div class="line"><a name="l02002"></a><span class="lineno"> 2002</span>&#160;<span class="comment">      Number of components on success, 0 on failure </span></div>
<div class="line"><a name="l02003"></a><span class="lineno"> 2003</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02004"></a><span class="lineno"> 2004</span>&#160; </div>
<div class="line"><a name="l02005"></a><span class="lineno"> 2005</span>&#160;  <span class="keywordtype">int</span> GetConnectedComponents( <span class="keywordtype">bool</span> bUseVertexConnections, </div>
<div class="line"><a name="l02006"></a><span class="lineno"> 2006</span>&#160;                              <span class="keywordtype">bool</span> bTopologicalConnections, </div>
<div class="line"><a name="l02007"></a><span class="lineno"> 2007</span>&#160;                              <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_Mesh*&gt;</a>* components</div>
<div class="line"><a name="l02008"></a><span class="lineno"> 2008</span>&#160;                            ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l02009"></a><span class="lineno"> 2009</span>&#160; </div>
<div class="line"><a name="l02010"></a><span class="lineno"> 2010</span>&#160; </div>
<div class="line"><a name="l02012"></a><span class="lineno"> 2012</span>&#160;  <span class="comment">// </span></div>
<div class="line"><a name="l02013"></a><span class="lineno"> 2013</span>&#160;  <span class="comment">// Double precision vertex support</span></div>
<div class="line"><a name="l02014"></a><span class="lineno"> 2014</span>&#160;  <span class="comment">// </span></div>
<div class="line"><a name="l02015"></a><span class="lineno"> 2015</span>&#160; </div>
<div class="line"><a name="l02016"></a><span class="lineno"> 2016</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02017"></a><span class="lineno"> 2017</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02018"></a><span class="lineno"> 2018</span>&#160;<span class="comment">    True if the mesh has single and double precision</span></div>
<div class="line"><a name="l02019"></a><span class="lineno"> 2019</span>&#160;<span class="comment">    vertices, and the values of the two sets are synchronized.</span></div>
<div class="line"><a name="l02020"></a><span class="lineno"> 2020</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02021"></a><span class="lineno"> 2021</span>&#160;  <span class="keywordtype">bool</span> HasSynchronizedDoubleAndSinglePrecisionVertices() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02022"></a><span class="lineno"> 2022</span>&#160; </div>
<div class="line"><a name="l02023"></a><span class="lineno"> 2023</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02024"></a><span class="lineno"> 2024</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02025"></a><span class="lineno"> 2025</span>&#160;<span class="comment">    True if the mesh has double precision vertices.</span></div>
<div class="line"><a name="l02026"></a><span class="lineno"> 2026</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l02027"></a><span class="lineno"> 2027</span>&#160;<span class="comment">    This function returns true if a mesh has double</span></div>
<div class="line"><a name="l02028"></a><span class="lineno"> 2028</span>&#160;<span class="comment">    precision vertex information, even if it is not</span></div>
<div class="line"><a name="l02029"></a><span class="lineno"> 2029</span>&#160;<span class="comment">    updated. </span></div>
<div class="line"><a name="l02030"></a><span class="lineno"> 2030</span>&#160;<span class="comment">    </span></div>
<div class="line"><a name="l02031"></a><span class="lineno"> 2031</span>&#160;<span class="comment">    Use ON_Mesh::DoublePrecisionVerticesAreValid()</span></div>
<div class="line"><a name="l02032"></a><span class="lineno"> 2032</span>&#160;<span class="comment">    and ON_Mesh::SinglePrecisionVerticesAreValid() to </span></div>
<div class="line"><a name="l02033"></a><span class="lineno"> 2033</span>&#160;<span class="comment">    check the validity.  </span></div>
<div class="line"><a name="l02034"></a><span class="lineno"> 2034</span>&#160;<span class="comment">    </span></div>
<div class="line"><a name="l02035"></a><span class="lineno"> 2035</span>&#160;<span class="comment">    Use ON_Mesh::UpdateDoublePrecisionVertices()</span></div>
<div class="line"><a name="l02036"></a><span class="lineno"> 2036</span>&#160;<span class="comment">    or ON_Mesh::UpdateSinglePrecisionVertices() to synchronize</span></div>
<div class="line"><a name="l02037"></a><span class="lineno"> 2037</span>&#160;<span class="comment">    values of single and double precision vertices.</span></div>
<div class="line"><a name="l02038"></a><span class="lineno"> 2038</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02039"></a><span class="lineno"> 2039</span>&#160;  <span class="keywordtype">bool</span> HasDoublePrecisionVertices() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02040"></a><span class="lineno"> 2040</span>&#160; </div>
<div class="line"><a name="l02041"></a><span class="lineno"> 2041</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02042"></a><span class="lineno"> 2042</span>&#160;<span class="comment">  Parameters:</span></div>
<div class="line"><a name="l02043"></a><span class="lineno"> 2043</span>&#160;<span class="comment">    bEnableDoublePrecisionVertices - [in]</span></div>
<div class="line"><a name="l02044"></a><span class="lineno"> 2044</span>&#160;<span class="comment">      True to enable use of double precision vertices.</span></div>
<div class="line"><a name="l02045"></a><span class="lineno"> 2045</span>&#160;<span class="comment">      False to destroy any existing precision vertices.</span></div>
<div class="line"><a name="l02046"></a><span class="lineno"> 2046</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02047"></a><span class="lineno"> 2047</span>&#160;  <span class="keywordtype">void</span> EnableDoublePrecisionVertices(<span class="keywordtype">bool</span> bEnableDoublePrecisionVertices);</div>
<div class="line"><a name="l02048"></a><span class="lineno"> 2048</span>&#160; </div>
<div class="line"><a name="l02049"></a><span class="lineno"> 2049</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02050"></a><span class="lineno"> 2050</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l02051"></a><span class="lineno"> 2051</span>&#160;<span class="comment">    If you modify the values of double precision vertices,</span></div>
<div class="line"><a name="l02052"></a><span class="lineno"> 2052</span>&#160;<span class="comment">    then you must call UpdateSinglePrecisonVertices().</span></div>
<div class="line"><a name="l02053"></a><span class="lineno"> 2053</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l02054"></a><span class="lineno"> 2054</span>&#160;<span class="comment">    If double precision vertices are not present, this function</span></div>
<div class="line"><a name="l02055"></a><span class="lineno"> 2055</span>&#160;<span class="comment">    does nothing.</span></div>
<div class="line"><a name="l02056"></a><span class="lineno"> 2056</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02057"></a><span class="lineno"> 2057</span>&#160;  <span class="keywordtype">void</span> UpdateSinglePrecisionVertices();</div>
<div class="line"><a name="l02058"></a><span class="lineno"> 2058</span>&#160; </div>
<div class="line"><a name="l02059"></a><span class="lineno"> 2059</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02060"></a><span class="lineno"> 2060</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l02061"></a><span class="lineno"> 2061</span>&#160;<span class="comment">    If you modify the values of the single precision vertices</span></div>
<div class="line"><a name="l02062"></a><span class="lineno"> 2062</span>&#160;<span class="comment">    in m_V[], then you must call UpdateDoublePrecisionVertices().</span></div>
<div class="line"><a name="l02063"></a><span class="lineno"> 2063</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l02064"></a><span class="lineno"> 2064</span>&#160;<span class="comment">    If double precision vertices are not present, this function</span></div>
<div class="line"><a name="l02065"></a><span class="lineno"> 2065</span>&#160;<span class="comment">    does nothing.</span></div>
<div class="line"><a name="l02066"></a><span class="lineno"> 2066</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02067"></a><span class="lineno"> 2067</span>&#160;  <span class="keywordtype">void</span> UpdateDoublePrecisionVertices();</div>
<div class="line"><a name="l02068"></a><span class="lineno"> 2068</span>&#160; </div>
<div class="line"><a name="l02069"></a><span class="lineno"> 2069</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02070"></a><span class="lineno"> 2070</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l02071"></a><span class="lineno"> 2071</span>&#160;<span class="comment">    If you have modified the single precision vertices</span></div>
<div class="line"><a name="l02072"></a><span class="lineno"> 2072</span>&#160;<span class="comment">    and are certain they are valid, then call this </span></div>
<div class="line"><a name="l02073"></a><span class="lineno"> 2073</span>&#160;<span class="comment">    function to update crc information.</span></div>
<div class="line"><a name="l02074"></a><span class="lineno"> 2074</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l02075"></a><span class="lineno"> 2075</span>&#160;<span class="comment">    If double precision vertices are not present, this function</span></div>
<div class="line"><a name="l02076"></a><span class="lineno"> 2076</span>&#160;<span class="comment">    does nothing.</span></div>
<div class="line"><a name="l02077"></a><span class="lineno"> 2077</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02078"></a><span class="lineno"> 2078</span>&#160;  <span class="keywordtype">void</span> SetSinglePrecisionVerticesAsValid();</div>
<div class="line"><a name="l02079"></a><span class="lineno"> 2079</span>&#160; </div>
<div class="line"><a name="l02080"></a><span class="lineno"> 2080</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02081"></a><span class="lineno"> 2081</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l02082"></a><span class="lineno"> 2082</span>&#160;<span class="comment">    If you have modified the double precision vertices</span></div>
<div class="line"><a name="l02083"></a><span class="lineno"> 2083</span>&#160;<span class="comment">    and are certain they are valid, then call this </span></div>
<div class="line"><a name="l02084"></a><span class="lineno"> 2084</span>&#160;<span class="comment">    function to update crc information.</span></div>
<div class="line"><a name="l02085"></a><span class="lineno"> 2085</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l02086"></a><span class="lineno"> 2086</span>&#160;<span class="comment">    If double precision vertices are not present, this function</span></div>
<div class="line"><a name="l02087"></a><span class="lineno"> 2087</span>&#160;<span class="comment">    does nothing.</span></div>
<div class="line"><a name="l02088"></a><span class="lineno"> 2088</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02089"></a><span class="lineno"> 2089</span>&#160;  <span class="keywordtype">void</span> SetDoublePrecisionVerticesAsValid();</div>
<div class="line"><a name="l02090"></a><span class="lineno"> 2090</span>&#160; </div>
<div class="line"><a name="l02091"></a><span class="lineno"> 2091</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02092"></a><span class="lineno"> 2092</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l02093"></a><span class="lineno"> 2093</span>&#160;<span class="comment">    The functions UpdateSinglePrecisionVertices(), </span></div>
<div class="line"><a name="l02094"></a><span class="lineno"> 2094</span>&#160;<span class="comment">    UpdateDoublePrecisionVertices(), and </span></div>
<div class="line"><a name="l02095"></a><span class="lineno"> 2095</span>&#160;<span class="comment">    SetSinglePrecisionVerticesAsValid() save</span></div>
<div class="line"><a name="l02096"></a><span class="lineno"> 2096</span>&#160;<span class="comment">    the count and crc of the single precision vertex</span></div>
<div class="line"><a name="l02097"></a><span class="lineno"> 2097</span>&#160;<span class="comment">    array. True is returned if there are no</span></div>
<div class="line"><a name="l02098"></a><span class="lineno"> 2098</span>&#160;<span class="comment">    double precision vertices or the current</span></div>
<div class="line"><a name="l02099"></a><span class="lineno"> 2099</span>&#160;<span class="comment">    count and crc of the single precision</span></div>
<div class="line"><a name="l02100"></a><span class="lineno"> 2100</span>&#160;<span class="comment">    vertex array match the saved values.</span></div>
<div class="line"><a name="l02101"></a><span class="lineno"> 2101</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l02102"></a><span class="lineno"> 2102</span>&#160;<span class="comment">    If double precision vertices are not present, this function</span></div>
<div class="line"><a name="l02103"></a><span class="lineno"> 2103</span>&#160;<span class="comment">    does nothing and returns true.</span></div>
<div class="line"><a name="l02104"></a><span class="lineno"> 2104</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02105"></a><span class="lineno"> 2105</span>&#160;  <span class="keywordtype">bool</span> SinglePrecisionVerticesAreValid() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02106"></a><span class="lineno"> 2106</span>&#160; </div>
<div class="line"><a name="l02107"></a><span class="lineno"> 2107</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02108"></a><span class="lineno"> 2108</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l02109"></a><span class="lineno"> 2109</span>&#160;<span class="comment">    The functions UpdateSinglePrecisionVertices(), </span></div>
<div class="line"><a name="l02110"></a><span class="lineno"> 2110</span>&#160;<span class="comment">    UpdateDoublePrecisionVertices(), and </span></div>
<div class="line"><a name="l02111"></a><span class="lineno"> 2111</span>&#160;<span class="comment">    SetDoublePrecisionVerticesAsValid() save</span></div>
<div class="line"><a name="l02112"></a><span class="lineno"> 2112</span>&#160;<span class="comment">    the count and crc of the double precision vertex</span></div>
<div class="line"><a name="l02113"></a><span class="lineno"> 2113</span>&#160;<span class="comment">    array. True is returned if the current</span></div>
<div class="line"><a name="l02114"></a><span class="lineno"> 2114</span>&#160;<span class="comment">    count and crc of the double precision</span></div>
<div class="line"><a name="l02115"></a><span class="lineno"> 2115</span>&#160;<span class="comment">    vertex array match the saved values.</span></div>
<div class="line"><a name="l02116"></a><span class="lineno"> 2116</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l02117"></a><span class="lineno"> 2117</span>&#160;<span class="comment">    If double precision vertices are not present, this function</span></div>
<div class="line"><a name="l02118"></a><span class="lineno"> 2118</span>&#160;<span class="comment">    does nothing and returns true.</span></div>
<div class="line"><a name="l02119"></a><span class="lineno"> 2119</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02120"></a><span class="lineno"> 2120</span>&#160;  <span class="keywordtype">bool</span> DoublePrecisionVerticesAreValid() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02121"></a><span class="lineno"> 2121</span>&#160; </div>
<div class="line"><a name="l02122"></a><span class="lineno"> 2122</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02123"></a><span class="lineno"> 2123</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l02124"></a><span class="lineno"> 2124</span>&#160;<span class="comment">    The function removes all double precision vertex information.</span></div>
<div class="line"><a name="l02125"></a><span class="lineno"> 2125</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02126"></a><span class="lineno"> 2126</span>&#160;  <span class="keywordtype">void</span> DestroyDoublePrecisionVertices();</div>
<div class="line"><a name="l02127"></a><span class="lineno"> 2127</span>&#160; </div>
<div class="line"><a name="l02128"></a><span class="lineno"> 2128</span>&#160; </div>
<div class="line"><a name="l02130"></a><span class="lineno"> 2130</span>&#160;  <span class="comment">// Implementation - mesh geometry</span></div>
<div class="line"><a name="l02131"></a><span class="lineno"> 2131</span>&#160; </div>
<div class="line"><a name="l02132"></a><span class="lineno"> 2132</span>&#160;  <span class="comment">// Vertex locations</span></div>
<div class="line"><a name="l02133"></a><span class="lineno"> 2133</span>&#160;  <span class="comment">//   In a case where adjacent facets share a vertex</span></div>
<div class="line"><a name="l02134"></a><span class="lineno"> 2134</span>&#160;  <span class="comment">//   location but have distinct normals or texture</span></div>
<div class="line"><a name="l02135"></a><span class="lineno"> 2135</span>&#160;  <span class="comment">//   coordinates at that location, the vertex must</span></div>
<div class="line"><a name="l02136"></a><span class="lineno"> 2136</span>&#160;  <span class="comment">//   be duplicated.</span></div>
<div class="line"><a name="l02137"></a><span class="lineno"> 2137</span>&#160; </div>
<div class="line"><a name="l02138"></a><span class="lineno"> 2138</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02139"></a><span class="lineno"> 2139</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l02140"></a><span class="lineno"> 2140</span>&#160;<span class="comment">    Get double precision vertices.  If they do not exist,</span></div>
<div class="line"><a name="l02141"></a><span class="lineno"> 2141</span>&#160;<span class="comment">    they will be created and match the existing single</span></div>
<div class="line"><a name="l02142"></a><span class="lineno"> 2142</span>&#160;<span class="comment">    precision vertices.</span></div>
<div class="line"><a name="l02143"></a><span class="lineno"> 2143</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02144"></a><span class="lineno"> 2144</span>&#160;<span class="comment">    Array of double precision vertices.  If you modify the</span></div>
<div class="line"><a name="l02145"></a><span class="lineno"> 2145</span>&#160;<span class="comment">    values in this array, you must make the same modifications</span></div>
<div class="line"><a name="l02146"></a><span class="lineno"> 2146</span>&#160;<span class="comment">    to the single precision vertices, or call </span></div>
<div class="line"><a name="l02147"></a><span class="lineno"> 2147</span>&#160;<span class="comment">    UpdateSinglePrecisonVertices().</span></div>
<div class="line"><a name="l02148"></a><span class="lineno"> 2148</span>&#160;<span class="comment">  Example:</span></div>
<div class="line"><a name="l02149"></a><span class="lineno"> 2149</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l02150"></a><span class="lineno"> 2150</span>&#160;<span class="comment">          // add a bunch of double precision information</span></div>
<div class="line"><a name="l02151"></a><span class="lineno"> 2151</span>&#160;<span class="comment">          ON_3dPointArray&amp; dv = mesh.DoublePrecisionVertices();</span></div>
<div class="line"><a name="l02152"></a><span class="lineno"> 2152</span>&#160;<span class="comment">          for ( i = 0; i &lt; lots; i++ )</span></div>
<div class="line"><a name="l02153"></a><span class="lineno"> 2153</span>&#160;<span class="comment">          {</span></div>
<div class="line"><a name="l02154"></a><span class="lineno"> 2154</span>&#160;<span class="comment">            dv[i] = ...</span></div>
<div class="line"><a name="l02155"></a><span class="lineno"> 2155</span>&#160;<span class="comment">          }</span></div>
<div class="line"><a name="l02156"></a><span class="lineno"> 2156</span>&#160;<span class="comment">          // This call updates the single precison values</span></div>
<div class="line"><a name="l02157"></a><span class="lineno"> 2157</span>&#160;<span class="comment">          // in m_V[] and sets all the counts and CRCs that</span></div>
<div class="line"><a name="l02158"></a><span class="lineno"> 2158</span>&#160;<span class="comment">          // are used in validity checking.</span></div>
<div class="line"><a name="l02159"></a><span class="lineno"> 2159</span>&#160;<span class="comment">          mesh.UpdateSinglePrecisonVertices();</span></div>
<div class="line"><a name="l02160"></a><span class="lineno"> 2160</span>&#160;<span class="comment">    </span></div>
<div class="line"><a name="l02161"></a><span class="lineno"> 2161</span>&#160;<span class="comment">  Remarks:</span></div>
<div class="line"><a name="l02162"></a><span class="lineno"> 2162</span>&#160;<span class="comment">    Avoid mulitple calls to DoublePrecisionVertices().</span></div>
<div class="line"><a name="l02163"></a><span class="lineno"> 2163</span>&#160;<span class="comment">    It is most efficient to make one call, save a local </span></div>
<div class="line"><a name="l02164"></a><span class="lineno"> 2164</span>&#160;<span class="comment">    reference, and use the local reference as needed.</span></div>
<div class="line"><a name="l02165"></a><span class="lineno"> 2165</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02166"></a><span class="lineno"> 2166</span>&#160;  <a class="code" href="class_o_n__3d_point_array.html">ON_3dPointArray</a>&amp; DoublePrecisionVertices();</div>
<div class="line"><a name="l02167"></a><span class="lineno"> 2167</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point_array.html">ON_3dPointArray</a>&amp; DoublePrecisionVertices() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02168"></a><span class="lineno"> 2168</span>&#160; </div>
<div class="line"><a name="l02169"></a><span class="lineno"> 2169</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02170"></a><span class="lineno"> 2170</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l02171"></a><span class="lineno"> 2171</span>&#160;<span class="comment">    Get single precision vertices.</span></div>
<div class="line"><a name="l02172"></a><span class="lineno"> 2172</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02173"></a><span class="lineno"> 2173</span>&#160;<span class="comment">    Array of float precision vertices.  If you modify the</span></div>
<div class="line"><a name="l02174"></a><span class="lineno"> 2174</span>&#160;<span class="comment">    values in this array, you must make the same modifications</span></div>
<div class="line"><a name="l02175"></a><span class="lineno"> 2175</span>&#160;<span class="comment">    to the double precision vertices, or call </span></div>
<div class="line"><a name="l02176"></a><span class="lineno"> 2176</span>&#160;<span class="comment">    UpdateSinglePrecisonVertices().</span></div>
<div class="line"><a name="l02177"></a><span class="lineno"> 2177</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02178"></a><span class="lineno"> 2178</span>&#160;  <a class="code" href="class_o_n__3f_point_array.html">ON_3fPointArray</a>&amp; SinglePrecisionVertices();</div>
<div class="line"><a name="l02179"></a><span class="lineno"> 2179</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n__3f_point_array.html">ON_3fPointArray</a>&amp; SinglePrecisionVertices() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02180"></a><span class="lineno"> 2180</span>&#160; </div>
<div class="line"><a name="l02181"></a><span class="lineno"> 2181</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02182"></a><span class="lineno"> 2182</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l02183"></a><span class="lineno"> 2183</span>&#160;<span class="comment">    In general,use one of</span></div>
<div class="line"><a name="l02184"></a><span class="lineno"> 2184</span>&#160;<span class="comment">    ON_Mesh::SinglePrecisionVertices()</span></div>
<div class="line"><a name="l02185"></a><span class="lineno"> 2185</span>&#160;<span class="comment">    or</span></div>
<div class="line"><a name="l02186"></a><span class="lineno"> 2186</span>&#160;<span class="comment">    ON_Mesh::DoublePrecisionVertices()</span></div>
<div class="line"><a name="l02187"></a><span class="lineno"> 2187</span>&#160;<span class="comment">    to get the array of vertex locations.  If you modify</span></div>
<div class="line"><a name="l02188"></a><span class="lineno"> 2188</span>&#160;<span class="comment">    m_V[] directly and HasDoublePrecisionVertices() is true,</span></div>
<div class="line"><a name="l02189"></a><span class="lineno"> 2189</span>&#160;<span class="comment">    then you must make the same modifications to the array</span></div>
<div class="line"><a name="l02190"></a><span class="lineno"> 2190</span>&#160;<span class="comment">    returned by DoublePrecisionVertices().</span></div>
<div class="line"><a name="l02191"></a><span class="lineno"> 2191</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02192"></a><span class="lineno"> 2192</span>&#160;  <a class="code" href="class_o_n__3f_point_array.html">ON_3fPointArray</a> m_V;</div>
<div class="line"><a name="l02193"></a><span class="lineno"> 2193</span>&#160; </div>
<div class="line"><a name="l02194"></a><span class="lineno"> 2194</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02195"></a><span class="lineno"> 2195</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02196"></a><span class="lineno"> 2196</span>&#160;<span class="comment">    Location of the vertex.  If double precision vertices</span></div>
<div class="line"><a name="l02197"></a><span class="lineno"> 2197</span>&#160;<span class="comment">    are present, the double precision vertex location is</span></div>
<div class="line"><a name="l02198"></a><span class="lineno"> 2198</span>&#160;<span class="comment">    returned.  If vertex_index is out of range,</span></div>
<div class="line"><a name="l02199"></a><span class="lineno"> 2199</span>&#160;<span class="comment">    ON_UNSET_VALUE is returned.</span></div>
<div class="line"><a name="l02200"></a><span class="lineno"> 2200</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02201"></a><span class="lineno"> 2201</span>&#160;  <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a> Vertex(<span class="keywordtype">int</span> vertex_index) <span class="keyword">const</span>;</div>
<div class="line"><a name="l02202"></a><span class="lineno"> 2202</span>&#160; </div>
<div class="line"><a name="l02203"></a><span class="lineno"> 2203</span>&#160;  <span class="comment">// m_F[] facets (triangles or quads)</span></div>
<div class="line"><a name="l02204"></a><span class="lineno"> 2204</span>&#160;  <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_MeshFace&gt;</a> m_F;</div>
<div class="line"><a name="l02205"></a><span class="lineno"> 2205</span>&#160; </div>
<div class="line"><a name="l02206"></a><span class="lineno"> 2206</span>&#160;  <span class="comment">// m_N[] OPTIONAL vertex unit normals</span></div>
<div class="line"><a name="l02207"></a><span class="lineno"> 2207</span>&#160;  <span class="comment">// If m_N[] is empty or m_N.Count() != m_V.Count(), </span></div>
<div class="line"><a name="l02208"></a><span class="lineno"> 2208</span>&#160;  <span class="comment">// Either m_N[] has zero count or it m_N[j] is the</span></div>
<div class="line"><a name="l02209"></a><span class="lineno"> 2209</span>&#160;  <span class="comment">// the unit vertex normal at m_V[j].</span></div>
<div class="line"><a name="l02210"></a><span class="lineno"> 2210</span>&#160;  <a class="code" href="class_o_n__3f_vector_array.html">ON_3fVectorArray</a> m_N;</div>
<div class="line"><a name="l02211"></a><span class="lineno"> 2211</span>&#160; </div>
<div class="line"><a name="l02212"></a><span class="lineno"> 2212</span>&#160;  <span class="comment">// m_FN[] OPTIONAL face unit normals</span></div>
<div class="line"><a name="l02213"></a><span class="lineno"> 2213</span>&#160;  <span class="comment">// If m_FN[] is empty or m_FN.Count() != m_F.Count(), </span></div>
<div class="line"><a name="l02214"></a><span class="lineno"> 2214</span>&#160;  <span class="comment">// then m_FN is ignored.  Otherwise m_FN[j] is the</span></div>
<div class="line"><a name="l02215"></a><span class="lineno"> 2215</span>&#160;  <span class="comment">// unit normal for the facet m_F[j].</span></div>
<div class="line"><a name="l02216"></a><span class="lineno"> 2216</span>&#160;  <a class="code" href="class_o_n__3f_vector_array.html">ON_3fVectorArray</a> m_FN;</div>
<div class="line"><a name="l02217"></a><span class="lineno"> 2217</span>&#160; </div>
<div class="line"><a name="l02219"></a><span class="lineno"> 2219</span>&#160;  <span class="comment">// Implementation - texture coordinates</span></div>
<div class="line"><a name="l02220"></a><span class="lineno"> 2220</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l02221"></a><span class="lineno"> 2221</span>&#160;  <span class="comment">// OPTIONAL texture coordinates for each vertex</span></div>
<div class="line"><a name="l02222"></a><span class="lineno"> 2222</span>&#160; </div>
<div class="line"><a name="l02223"></a><span class="lineno"> 2223</span>&#160;  <span class="comment">// It would be nice if this were an ON_TextureCoordinates,</span></div>
<div class="line"><a name="l02224"></a><span class="lineno"> 2224</span>&#160;  <span class="comment">// but that breaks lots of checked out code that assumes</span></div>
<div class="line"><a name="l02225"></a><span class="lineno"> 2225</span>&#160;  <span class="comment">// m_T is an array of ON_2fPoints.</span></div>
<div class="line"><a name="l02226"></a><span class="lineno"> 2226</span>&#160;  <a class="code" href="class_o_n___mapping_tag.html">ON_MappingTag</a> m_Ttag; <span class="comment">// OPTIONAL tag for values in m_T[]</span></div>
<div class="line"><a name="l02227"></a><span class="lineno"> 2227</span>&#160;  <a class="code" href="class_o_n__2f_point_array.html">ON_2fPointArray</a> m_T;  <span class="comment">// OPTIONAL texture coordinates for each vertex</span></div>
<div class="line"><a name="l02228"></a><span class="lineno"> 2228</span>&#160; </div>
<div class="line"><a name="l02229"></a><span class="lineno"> 2229</span>&#160;  <span class="comment">// RUNTIME ONLY</span></div>
<div class="line"><a name="l02230"></a><span class="lineno"> 2230</span>&#160;  <span class="comment">//   This array is used to cache texture coordinates used by</span></div>
<div class="line"><a name="l02231"></a><span class="lineno"> 2231</span>&#160;  <span class="comment">//   rendering applications that require 1d texture coordinates,</span></div>
<div class="line"><a name="l02232"></a><span class="lineno"> 2232</span>&#160;  <span class="comment">//   3d texture coordinates, or multiple sets of texture </span></div>
<div class="line"><a name="l02233"></a><span class="lineno"> 2233</span>&#160;  <span class="comment">//   coordinates (e.g. blended textures with different mappings).</span></div>
<div class="line"><a name="l02234"></a><span class="lineno"> 2234</span>&#160;  <span class="comment">//   Users are responsible for verifying </span></div>
<div class="line"><a name="l02235"></a><span class="lineno"> 2235</span>&#160;  <span class="comment">//   m_TC[i].m_T.Count() = m_V.Count()</span></div>
<div class="line"><a name="l02236"></a><span class="lineno"> 2236</span>&#160;  <a class="code" href="class_o_n___class_array.html">ON_ClassArray&lt;ON_TextureCoordinates&gt;</a> m_TC;  </div>
<div class="line"><a name="l02237"></a><span class="lineno"> 2237</span>&#160; </div>
<div class="line"><a name="l02238"></a><span class="lineno"> 2238</span>&#160;  <span class="comment">// If m_T.Count() == m_V.Count(), then the mesh has texture coordinates</span></div>
<div class="line"><a name="l02239"></a><span class="lineno"> 2239</span>&#160;  <span class="comment">// and m_T[j] is the texture coordinate for vertex m_V[j].</span></div>
<div class="line"><a name="l02240"></a><span class="lineno"> 2240</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l02241"></a><span class="lineno"> 2241</span>&#160;  <span class="comment">// When opennurbs or Rhino meshes an ON_Surface or ON_Brep, the texture</span></div>
<div class="line"><a name="l02242"></a><span class="lineno"> 2242</span>&#160;  <span class="comment">// coordinates have a &quot;canonical&quot; linear relationship with the surface </span></div>
<div class="line"><a name="l02243"></a><span class="lineno"> 2243</span>&#160;  <span class="comment">// parameters that is described in the next section.  However, various </span></div>
<div class="line"><a name="l02244"></a><span class="lineno"> 2244</span>&#160;  <span class="comment">// mappings, spherical, planar, cylindrical, etc., can be applied that </span></div>
<div class="line"><a name="l02245"></a><span class="lineno"> 2245</span>&#160;  <span class="comment">// change the values of the texture coordinates.</span></div>
<div class="line"><a name="l02246"></a><span class="lineno"> 2246</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l02247"></a><span class="lineno"> 2247</span>&#160;  <span class="comment">// If a texture mapping function was used to set the m_T[] values, </span></div>
<div class="line"><a name="l02248"></a><span class="lineno"> 2248</span>&#160;  <span class="comment">// then the id and serial number of the mapping function is saved</span></div>
<div class="line"><a name="l02249"></a><span class="lineno"> 2249</span>&#160;  <span class="comment">// in m_mapping_id and m_mapping_sn. The intended use of these fields</span></div>
<div class="line"><a name="l02250"></a><span class="lineno"> 2250</span>&#160;  <span class="comment">// is to make it easy to avoid unnecessary recalculation.  </span></div>
<div class="line"><a name="l02251"></a><span class="lineno"> 2251</span>&#160;  <span class="comment">// If a mesh is modified, then m_mapping_id should be set to nil </span></div>
<div class="line"><a name="l02252"></a><span class="lineno"> 2252</span>&#160;  <span class="comment">// and m_mapping_crc should be set to 0.</span></div>
<div class="line"><a name="l02253"></a><span class="lineno"> 2253</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l02255"></a><span class="lineno"> 2255</span>&#160;<span class="comment"></span> </div>
<div class="line"><a name="l02256"></a><span class="lineno"> 2256</span>&#160; </div>
<div class="line"><a name="l02258"></a><span class="lineno"> 2258</span>&#160;  <span class="comment">// Implementation - surface parameters and packed texture </span></div>
<div class="line"><a name="l02259"></a><span class="lineno"> 2259</span>&#160;  <span class="comment">// information</span></div>
<div class="line"><a name="l02260"></a><span class="lineno"> 2260</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l02261"></a><span class="lineno"> 2261</span>&#160;  <span class="comment">// If m_S.Count() == m_V.Count(), then the mesh is a tesselation</span></div>
<div class="line"><a name="l02262"></a><span class="lineno"> 2262</span>&#160;  <span class="comment">// of a parameteric surface and m_S[j] is the surface parameter at</span></div>
<div class="line"><a name="l02263"></a><span class="lineno"> 2263</span>&#160;  <span class="comment">// m_V[j].  Storing values in m_S[] is OPTIONAL.</span></div>
<div class="line"><a name="l02264"></a><span class="lineno"> 2264</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l02265"></a><span class="lineno"> 2265</span>&#160;  <span class="comment">// If m_srf_scale[] has positive values, then they report</span></div>
<div class="line"><a name="l02266"></a><span class="lineno"> 2266</span>&#160;  <span class="comment">// the world coordinate size of a rectangle that would </span></div>
<div class="line"><a name="l02267"></a><span class="lineno"> 2267</span>&#160;  <span class="comment">// minimize texture distortion if it were mapped to the</span></div>
<div class="line"><a name="l02268"></a><span class="lineno"> 2268</span>&#160;  <span class="comment">// mesh using normalized surface evaluation parameters.</span></div>
<div class="line"><a name="l02269"></a><span class="lineno"> 2269</span>&#160;  <span class="comment">// This information is used to calculate high quality </span></div>
<div class="line"><a name="l02270"></a><span class="lineno"> 2270</span>&#160;  <span class="comment">// packed texture coordinates.  </span></div>
<div class="line"><a name="l02271"></a><span class="lineno"> 2271</span>&#160;  <a class="code" href="class_o_n__2d_point_array.html">ON_2dPointArray</a> m_S;</div>
<div class="line"><a name="l02272"></a><span class="lineno"> 2272</span>&#160;  <a class="code" href="class_o_n___interval.html">ON_Interval</a> m_srf_domain[2]; <span class="comment">// surface evaluation domain.</span></div>
<div class="line"><a name="l02273"></a><span class="lineno"> 2273</span>&#160;  <span class="keywordtype">double</span> m_srf_scale[2];</div>
<div class="line"><a name="l02274"></a><span class="lineno"> 2274</span>&#160; </div>
<div class="line"><a name="l02275"></a><span class="lineno"> 2275</span>&#160; </div>
<div class="line"><a name="l02276"></a><span class="lineno"> 2276</span>&#160;  <span class="comment">// Packed texture information.</span></div>
<div class="line"><a name="l02277"></a><span class="lineno"> 2277</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l02278"></a><span class="lineno"> 2278</span>&#160;  <span class="comment">// If either of the m_packed_tex_domain[] intervals is a </span></div>
<div class="line"><a name="l02279"></a><span class="lineno"> 2279</span>&#160;  <span class="comment">// proper subinterval of (0,1), then a texture packing </span></div>
<div class="line"><a name="l02280"></a><span class="lineno"> 2280</span>&#160;  <span class="comment">// calculation assigned this subrectangle to this mesh.</span></div>
<div class="line"><a name="l02281"></a><span class="lineno"> 2281</span>&#160; </div>
<div class="line"><a name="l02282"></a><span class="lineno"> 2282</span>&#160;  <a class="code" href="class_o_n___interval.html">ON_Interval</a> m_packed_tex_domain[2];</div>
<div class="line"><a name="l02283"></a><span class="lineno"> 2283</span>&#160; </div>
<div class="line"><a name="l02284"></a><span class="lineno"> 2284</span>&#160;  <span class="comment">// The m_packed_tex_rotate setting is valid only when</span></div>
<div class="line"><a name="l02285"></a><span class="lineno"> 2285</span>&#160;  <span class="comment">// m_S, m_srf_domain, m_packed_scale[] and </span></div>
<div class="line"><a name="l02286"></a><span class="lineno"> 2286</span>&#160;  <span class="comment">// m_packed_tex_domain[] are all valid and the texture</span></div>
<div class="line"><a name="l02287"></a><span class="lineno"> 2287</span>&#160;  <span class="comment">// coordinates are based on surface evaluation parameters.</span></div>
<div class="line"><a name="l02288"></a><span class="lineno"> 2288</span>&#160;  <span class="comment">// In this special situation, this boolean records the </span></div>
<div class="line"><a name="l02289"></a><span class="lineno"> 2289</span>&#160;  <span class="comment">// correspondence between the the surface parameters, (u,v),</span></div>
<div class="line"><a name="l02290"></a><span class="lineno"> 2290</span>&#160;  <span class="comment">// and the packed texture coordinates, (s,t),</span></div>
<div class="line"><a name="l02291"></a><span class="lineno"> 2291</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l02292"></a><span class="lineno"> 2292</span>&#160;  <span class="comment">//   m_packed_tex_rotate = false:</span></div>
<div class="line"><a name="l02293"></a><span class="lineno"> 2293</span>&#160;  <span class="comment">//     a = m_srf_domain[0].NormalizedParameterAt(u);</span></div>
<div class="line"><a name="l02294"></a><span class="lineno"> 2294</span>&#160;  <span class="comment">//     b = m_srf_domain[1].NormalizedParameterAt(v);</span></div>
<div class="line"><a name="l02295"></a><span class="lineno"> 2295</span>&#160;  <span class="comment">//     s = m_packed_tex_domain[0].ParameterAt(a);</span></div>
<div class="line"><a name="l02296"></a><span class="lineno"> 2296</span>&#160;  <span class="comment">//     t = m_packed_tex_domain[1].ParameterAt(b);</span></div>
<div class="line"><a name="l02297"></a><span class="lineno"> 2297</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l02298"></a><span class="lineno"> 2298</span>&#160;  <span class="comment">//     x = m_packed_tex_domain[0].NormalizedParameterAt(s);</span></div>
<div class="line"><a name="l02299"></a><span class="lineno"> 2299</span>&#160;  <span class="comment">//     y = m_packed_tex_domain[1].NormalizedParameterAt(t);</span></div>
<div class="line"><a name="l02300"></a><span class="lineno"> 2300</span>&#160;  <span class="comment">//     u = m_srf_domain[0].ParameterAt(x);</span></div>
<div class="line"><a name="l02301"></a><span class="lineno"> 2301</span>&#160;  <span class="comment">//     v = m_srf_domain[1].ParameterAt(y);</span></div>
<div class="line"><a name="l02302"></a><span class="lineno"> 2302</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l02303"></a><span class="lineno"> 2303</span>&#160;  <span class="comment">//   m_packed_tex_rotate = true:</span></div>
<div class="line"><a name="l02304"></a><span class="lineno"> 2304</span>&#160;  <span class="comment">//     a = m_srf_domain[0].NormalizedParameterAt(u);</span></div>
<div class="line"><a name="l02305"></a><span class="lineno"> 2305</span>&#160;  <span class="comment">//     b = m_srf_domain[1].NormalizedParameterAt(v);</span></div>
<div class="line"><a name="l02306"></a><span class="lineno"> 2306</span>&#160;  <span class="comment">//     s = m_packed_tex_domain[0].ParameterAt(a);</span></div>
<div class="line"><a name="l02307"></a><span class="lineno"> 2307</span>&#160;  <span class="comment">//     t = m_packed_tex_domain[1].ParameterAt(1.0-b);</span></div>
<div class="line"><a name="l02308"></a><span class="lineno"> 2308</span>&#160;  <span class="comment">//</span></div>
<div class="line"><a name="l02309"></a><span class="lineno"> 2309</span>&#160;  <span class="comment">//     x = m_packed_tex_domain[0].NormalizedParameterAt(s);</span></div>
<div class="line"><a name="l02310"></a><span class="lineno"> 2310</span>&#160;  <span class="comment">//     y = m_packed_tex_domain[1].NormalizedParameterAt(t);</span></div>
<div class="line"><a name="l02311"></a><span class="lineno"> 2311</span>&#160;  <span class="comment">//     u = m_srf_domain[0].ParameterAt(y);</span></div>
<div class="line"><a name="l02312"></a><span class="lineno"> 2312</span>&#160;  <span class="comment">//     v = m_srf_domain[1].ParameterAt(1.0 - x);</span></div>
<div class="line"><a name="l02313"></a><span class="lineno"> 2313</span>&#160;  <span class="keywordtype">bool</span> m_packed_tex_rotate;</div>
<div class="line"><a name="l02314"></a><span class="lineno"> 2314</span>&#160; </div>
<div class="line"><a name="l02315"></a><span class="lineno"> 2315</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02316"></a><span class="lineno"> 2316</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02317"></a><span class="lineno"> 2317</span>&#160;<span class="comment">    True if the m_srf_scale[] values are positive and</span></div>
<div class="line"><a name="l02318"></a><span class="lineno"> 2318</span>&#160;<span class="comment">    the m_packed_tex_domain[] intervals are set to values</span></div>
<div class="line"><a name="l02319"></a><span class="lineno"> 2319</span>&#160;<span class="comment">    that describe a proper subrectangle of (0,1)x(0,1).</span></div>
<div class="line"><a name="l02320"></a><span class="lineno"> 2320</span>&#160;<span class="comment">    True does not necessarily mean the current values in</span></div>
<div class="line"><a name="l02321"></a><span class="lineno"> 2321</span>&#160;<span class="comment">    m_T[] are packed texture coordinates.</span></div>
<div class="line"><a name="l02322"></a><span class="lineno"> 2322</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02323"></a><span class="lineno"> 2323</span>&#160;  <span class="keywordtype">bool</span> HasPackedTextureRegion() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02324"></a><span class="lineno"> 2324</span>&#160; </div>
<div class="line"><a name="l02326"></a><span class="lineno"> 2326</span>&#160;  <span class="comment">// Implementation - curvature</span></div>
<div class="line"><a name="l02327"></a><span class="lineno"> 2327</span>&#160; </div>
<div class="line"><a name="l02328"></a><span class="lineno"> 2328</span>&#160;  <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_SurfaceCurvature&gt;</a> m_K;  <span class="comment">// OPTIONAL surface curvatures</span></div>
<div class="line"><a name="l02329"></a><span class="lineno"> 2329</span>&#160;                                            <span class="comment">// Either m_K[] has zero count or it has the same</span></div>
<div class="line"><a name="l02330"></a><span class="lineno"> 2330</span>&#160;                                            <span class="comment">// count as m_V[], in which case m_K[j] reports</span></div>
<div class="line"><a name="l02331"></a><span class="lineno"> 2331</span>&#160;                                            <span class="comment">// the surface curvatures at m_V[j].</span></div>
<div class="line"><a name="l02332"></a><span class="lineno"> 2332</span>&#160; </div>
<div class="line"><a name="l02334"></a><span class="lineno"> 2334</span>&#160;  <span class="comment">// Implementation - false color</span></div>
<div class="line"><a name="l02335"></a><span class="lineno"> 2335</span>&#160;  <a class="code" href="class_o_n___mapping_tag.html">ON_MappingTag</a> m_Ctag; <span class="comment">// OPTIONAL tag for values in m_C[]</span></div>
<div class="line"><a name="l02336"></a><span class="lineno"> 2336</span>&#160;  <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;ON_Color&gt;</a> m_C;  <span class="comment">// OPTIONAL vertex color</span></div>
<div class="line"><a name="l02337"></a><span class="lineno"> 2337</span>&#160;                                 <span class="comment">// Either m_C[] has zero count or it has the same</span></div>
<div class="line"><a name="l02338"></a><span class="lineno"> 2338</span>&#160;                                 <span class="comment">// count as m_V[], in which case m_C[j] reports</span></div>
<div class="line"><a name="l02339"></a><span class="lineno"> 2339</span>&#160;                                 <span class="comment">// the color assigned to m_V[j].</span></div>
<div class="line"><a name="l02340"></a><span class="lineno"> 2340</span>&#160; </div>
<div class="line"><a name="l02342"></a><span class="lineno"> 2342</span>&#160;  <span class="comment">// Implementation - runtime vertex visibility - not saved in 3dm files.</span></div>
<div class="line"><a name="l02343"></a><span class="lineno"> 2343</span>&#160;  <a class="code" href="class_o_n___simple_array.html">ON_SimpleArray&lt;bool&gt;</a> m_H; <span class="comment">// OPTIONAL vertex visibility.</span></div>
<div class="line"><a name="l02344"></a><span class="lineno"> 2344</span>&#160;                            <span class="comment">// If m_H.Count() = m_V.Count(), then</span></div>
<div class="line"><a name="l02345"></a><span class="lineno"> 2345</span>&#160;                            <span class="comment">// m_H[vi] is true if the vertex m_V[vi] </span></div>
<div class="line"><a name="l02346"></a><span class="lineno"> 2346</span>&#160;                            <span class="comment">// is hidden.  Otherwise, all vertices are visible.</span></div>
<div class="line"><a name="l02347"></a><span class="lineno"> 2347</span>&#160;  <span class="keywordtype">int</span> m_hidden_count;       <span class="comment">// number of vertices that are hidden</span></div>
<div class="line"><a name="l02348"></a><span class="lineno"> 2348</span>&#160;                            <span class="comment">// = number of true values in m_H[] array.</span></div>
<div class="line"><a name="l02349"></a><span class="lineno"> 2349</span>&#160; </div>
<div class="line"><a name="l02351"></a><span class="lineno"> 2351</span>&#160;  <span class="comment">// Implementation - runtime UI information</span></div>
<div class="line"><a name="l02352"></a><span class="lineno"> 2352</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___object.html">ON_Object</a>* m_parent; <span class="comment">// runtime parent geometry (use ...::Cast() to get it)</span></div>
<div class="line"><a name="l02353"></a><span class="lineno"> 2353</span>&#160; </div>
<div class="line"><a name="l02354"></a><span class="lineno"> 2354</span>&#160;<span class="keyword">protected</span>:</div>
<div class="line"><a name="l02355"></a><span class="lineno"> 2355</span>&#160;  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="class_o_n___mesh_vertex_ref.html">ON_MeshVertexRef</a>;</div>
<div class="line"><a name="l02356"></a><span class="lineno"> 2356</span>&#160;  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="class_o_n___mesh_edge_ref.html">ON_MeshEdgeRef</a>;</div>
<div class="line"><a name="l02357"></a><span class="lineno"> 2357</span>&#160;  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="class_o_n___mesh_face_ref.html">ON_MeshFaceRef</a>;</div>
<div class="line"><a name="l02358"></a><span class="lineno"> 2358</span>&#160; </div>
<div class="line"><a name="l02359"></a><span class="lineno"> 2359</span>&#160; </div>
<div class="line"><a name="l02361"></a><span class="lineno"> 2361</span>&#160;  <span class="comment">// Implementation - mesh topology</span></div>
<div class="line"><a name="l02362"></a><span class="lineno"> 2362</span>&#160;  <a class="code" href="class_o_n___mesh_topology.html">ON_MeshTopology</a> m_top;</div>
<div class="line"><a name="l02363"></a><span class="lineno"> 2363</span>&#160; </div>
<div class="line"><a name="l02364"></a><span class="lineno"> 2364</span>&#160;  <a class="code" href="class_o_n___mesh_parameters.html">ON_MeshParameters</a>* m_mesh_parameters; <span class="comment">// If mesh was created from a parametric surface,</span></div>
<div class="line"><a name="l02365"></a><span class="lineno"> 2365</span>&#160;                                        <span class="comment">// these parameters were used to create the mesh.</span></div>
<div class="line"><a name="l02366"></a><span class="lineno"> 2366</span>&#160;  <span class="keywordtype">int</span>                         m_invalid_count;</div>
<div class="line"><a name="l02367"></a><span class="lineno"> 2367</span>&#160;  <span class="keywordtype">int</span>                         m_quad_count;</div>
<div class="line"><a name="l02368"></a><span class="lineno"> 2368</span>&#160;  <span class="keywordtype">int</span>                         m_triangle_count;</div>
<div class="line"><a name="l02369"></a><span class="lineno"> 2369</span>&#160; </div>
<div class="line"><a name="l02370"></a><span class="lineno"> 2370</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l02371"></a><span class="lineno"> 2371</span>&#160;  <span class="keywordtype">char</span> m_mesh_is_closed;   <span class="comment">// 0 = unset, 1 = all edges have 2 or more faces, 2 = at least one boundary edge </span></div>
<div class="line"><a name="l02372"></a><span class="lineno"> 2372</span>&#160;  <span class="keywordtype">char</span> m_mesh_is_manifold; <span class="comment">// 0 = unset, 1 = all edges have 1 or 2 faces, 2 = not manifold</span></div>
<div class="line"><a name="l02373"></a><span class="lineno"> 2373</span>&#160;  <span class="keywordtype">char</span> m_mesh_is_oriented; <span class="comment">// 0 = unset, 1 = faces normals agree across all edges that have 2 faces, 2 = not oriented</span></div>
<div class="line"><a name="l02374"></a><span class="lineno"> 2374</span>&#160;  <span class="keywordtype">char</span> m_mesh_is_solid;    <span class="comment">// 0 = unset, 1 = solid with outward face normals, 2 = solid with inward face normals, 3 = not solid</span></div>
<div class="line"><a name="l02375"></a><span class="lineno"> 2375</span>&#160; </div>
<div class="line"><a name="l02376"></a><span class="lineno"> 2376</span>&#160;<span class="keyword">protected</span>:</div>
<div class="line"><a name="l02377"></a><span class="lineno"> 2377</span>&#160;  <span class="comment">// The bounding boxes are valid if m_?box[0][0] &lt;= m_?box[0][1];</span></div>
<div class="line"><a name="l02378"></a><span class="lineno"> 2378</span>&#160;  <span class="keywordtype">float</span> m_vbox[2][3]; <span class="comment">// 3d bounding box of all referenced vertices</span></div>
<div class="line"><a name="l02379"></a><span class="lineno"> 2379</span>&#160;  <span class="keywordtype">float</span> m_nbox[2][3]; <span class="comment">// 3d bounding box of all referenced unit normals </span></div>
<div class="line"><a name="l02380"></a><span class="lineno"> 2380</span>&#160;                      <span class="comment">// (for estimation of Gauss map bounds)</span></div>
<div class="line"><a name="l02381"></a><span class="lineno"> 2381</span>&#160;  <span class="keywordtype">float</span> m_tbox[2][2]; <span class="comment">// 2d bounding box of all referenced texture coordinates</span></div>
<div class="line"><a name="l02382"></a><span class="lineno"> 2382</span>&#160;  <a class="code" href="class_o_n___mesh_curvature_stats.html">ON_MeshCurvatureStats</a>* m_kstat[4]; <span class="comment">// gaussian,mean,min,max,sectionx,sectiony,sectionz</span></div>
<div class="line"><a name="l02383"></a><span class="lineno"> 2383</span>&#160; </div>
<div class="line"><a name="l02384"></a><span class="lineno"> 2384</span>&#160;  <span class="comment">// sub-mesh information rendering large meshes</span></div>
<div class="line"><a name="l02385"></a><span class="lineno"> 2385</span>&#160;  <a class="code" href="class_o_n___mesh_partition.html">ON_MeshPartition</a>* m_partition;</div>
<div class="line"><a name="l02386"></a><span class="lineno"> 2386</span>&#160; </div>
<div class="line"><a name="l02387"></a><span class="lineno"> 2387</span>&#160;<span class="keyword">private</span>:</div>
<div class="line"><a name="l02388"></a><span class="lineno"> 2388</span>&#160;  <span class="keywordtype">bool</span> Write_1( <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; ) <span class="keyword">const</span>; <span class="comment">// uncompressed 1.x format</span></div>
<div class="line"><a name="l02389"></a><span class="lineno"> 2389</span>&#160;  <span class="keywordtype">bool</span> Write_2( <span class="keywordtype">int</span>, <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; ) <span class="keyword">const</span>; <span class="comment">// compressed 2.x format</span></div>
<div class="line"><a name="l02390"></a><span class="lineno"> 2390</span>&#160;  <span class="keywordtype">bool</span> Read_1( <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; );</div>
<div class="line"><a name="l02391"></a><span class="lineno"> 2391</span>&#160;  <span class="keywordtype">bool</span> Read_2( <span class="keywordtype">int</span>, <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; );</div>
<div class="line"><a name="l02392"></a><span class="lineno"> 2392</span>&#160;  <span class="keywordtype">bool</span> WriteFaceArray( <span class="keywordtype">int</span>, <span class="keywordtype">int</span>, <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l02393"></a><span class="lineno"> 2393</span>&#160;  <span class="keywordtype">bool</span> ReadFaceArray( <span class="keywordtype">int</span>, <span class="keywordtype">int</span>, <a class="code" href="class_o_n___binary_archive.html">ON_BinaryArchive</a>&amp; );</div>
<div class="line"><a name="l02394"></a><span class="lineno"> 2394</span>&#160;  <span class="keywordtype">bool</span> SwapEdge_Helper( <span class="keywordtype">int</span>, <span class="keywordtype">bool</span> );</div>
<div class="line"><a name="l02395"></a><span class="lineno"> 2395</span>&#160;};</div>
<div class="line"><a name="l02396"></a><span class="lineno"> 2396</span>&#160; </div>
<div class="line"><a name="l02397"></a><span class="lineno"><a class="line" href="class_o_n___mesh_vertex_ref.html"> 2397</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___mesh_vertex_ref.html">ON_MeshVertexRef</a> : <span class="keyword">public</span> <a class="code" href="class_o_n___geometry.html">ON_Geometry</a></div>
<div class="line"><a name="l02398"></a><span class="lineno"> 2398</span>&#160;{</div>
<div class="line"><a name="l02399"></a><span class="lineno"> 2399</span>&#160;  ON_OBJECT_DECLARE(<a class="code" href="class_o_n___mesh_vertex_ref.html">ON_MeshVertexRef</a>);</div>
<div class="line"><a name="l02400"></a><span class="lineno"> 2400</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l02401"></a><span class="lineno"> 2401</span>&#160;  <a class="code" href="class_o_n___mesh_vertex_ref.html">ON_MeshVertexRef</a>();</div>
<div class="line"><a name="l02402"></a><span class="lineno"> 2402</span>&#160;  ~<a class="code" href="class_o_n___mesh_vertex_ref.html">ON_MeshVertexRef</a>();</div>
<div class="line"><a name="l02403"></a><span class="lineno"> 2403</span>&#160;  <a class="code" href="class_o_n___mesh_vertex_ref.html">ON_MeshVertexRef</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="class_o_n___mesh_vertex_ref.html">ON_MeshVertexRef</a>&amp;);</div>
<div class="line"><a name="l02404"></a><span class="lineno"> 2404</span>&#160; </div>
<div class="line"><a name="l02405"></a><span class="lineno"> 2405</span>&#160; </div>
<div class="line"><a name="l02406"></a><span class="lineno"> 2406</span>&#160;  <span class="comment">// parent mesh</span></div>
<div class="line"><a name="l02407"></a><span class="lineno"> 2407</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>* m_mesh;</div>
<div class="line"><a name="l02408"></a><span class="lineno"> 2408</span>&#160;  </div>
<div class="line"><a name="l02409"></a><span class="lineno"> 2409</span>&#160;  <span class="comment">// m_mesh-&gt;m_V[] index</span></div>
<div class="line"><a name="l02410"></a><span class="lineno"> 2410</span>&#160;  <span class="comment">// (can be -1 when m_top_vi references a shared vertex location)</span></div>
<div class="line"><a name="l02411"></a><span class="lineno"> 2411</span>&#160;  <span class="keywordtype">int</span> m_mesh_vi; </div>
<div class="line"><a name="l02412"></a><span class="lineno"> 2412</span>&#160;  </div>
<div class="line"><a name="l02413"></a><span class="lineno"> 2413</span>&#160;  <span class="comment">// m_mesh-&gt;m_top.m_tope[] index</span></div>
<div class="line"><a name="l02414"></a><span class="lineno"> 2414</span>&#160;  <span class="keywordtype">int</span> m_top_vi; </div>
<div class="line"><a name="l02415"></a><span class="lineno"> 2415</span>&#160; </div>
<div class="line"><a name="l02416"></a><span class="lineno"> 2416</span>&#160; </div>
<div class="line"><a name="l02417"></a><span class="lineno"> 2417</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02418"></a><span class="lineno"> 2418</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l02419"></a><span class="lineno"> 2419</span>&#160;<span class="comment">    Override of the virtual ON_Geometry::ComponentIndex().</span></div>
<div class="line"><a name="l02420"></a><span class="lineno"> 2420</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02421"></a><span class="lineno"> 2421</span>&#160;<span class="comment">    A component index for the vertex.  The type of the returned</span></div>
<div class="line"><a name="l02422"></a><span class="lineno"> 2422</span>&#160;<span class="comment">    component index can be </span></div>
<div class="line"><a name="l02423"></a><span class="lineno"> 2423</span>&#160;<span class="comment">    ON_COMPONENT_INDEX::mesh_vertex, </span></div>
<div class="line"><a name="l02424"></a><span class="lineno"> 2424</span>&#160;<span class="comment">    ON_COMPONENT_INDEX::meshtop_vertex, or</span></div>
<div class="line"><a name="l02425"></a><span class="lineno"> 2425</span>&#160;<span class="comment">    ON_COMPONENT_INDEX::invalid_type.</span></div>
<div class="line"><a name="l02426"></a><span class="lineno"> 2426</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02427"></a><span class="lineno"> 2427</span>&#160;  ON_COMPONENT_INDEX ComponentIndex() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02428"></a><span class="lineno"> 2428</span>&#160; </div>
<div class="line"><a name="l02429"></a><span class="lineno"> 2429</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02430"></a><span class="lineno"> 2430</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02431"></a><span class="lineno"> 2431</span>&#160;<span class="comment">    The mesh topology associated with this </span></div>
<div class="line"><a name="l02432"></a><span class="lineno"> 2432</span>&#160;<span class="comment">    mesh vertex reference or NULL if it doesn&#39;t</span></div>
<div class="line"><a name="l02433"></a><span class="lineno"> 2433</span>&#160;<span class="comment">    exist.</span></div>
<div class="line"><a name="l02434"></a><span class="lineno"> 2434</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02435"></a><span class="lineno"> 2435</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___mesh_topology.html">ON_MeshTopology</a>* MeshTopology() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02436"></a><span class="lineno"> 2436</span>&#160; </div>
<div class="line"><a name="l02437"></a><span class="lineno"> 2437</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02438"></a><span class="lineno"> 2438</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02439"></a><span class="lineno"> 2439</span>&#160;<span class="comment">    The 3d location of the mesh vertex.  Returns</span></div>
<div class="line"><a name="l02440"></a><span class="lineno"> 2440</span>&#160;<span class="comment">    ON_UNSET_POINT is this ON_MeshVertexRef is not </span></div>
<div class="line"><a name="l02441"></a><span class="lineno"> 2441</span>&#160;<span class="comment">    valid.</span></div>
<div class="line"><a name="l02442"></a><span class="lineno"> 2442</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02443"></a><span class="lineno"> 2443</span>&#160;  <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a> Point() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02444"></a><span class="lineno"> 2444</span>&#160; </div>
<div class="line"><a name="l02445"></a><span class="lineno"> 2445</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02446"></a><span class="lineno"> 2446</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02447"></a><span class="lineno"> 2447</span>&#160;<span class="comment">    The mesh topology vertex associated with this </span></div>
<div class="line"><a name="l02448"></a><span class="lineno"> 2448</span>&#160;<span class="comment">    mesh vertex reference.</span></div>
<div class="line"><a name="l02449"></a><span class="lineno"> 2449</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02450"></a><span class="lineno"> 2450</span>&#160;  <span class="keyword">const</span> <a class="code" href="struct_o_n___mesh_topology_vertex.html">ON_MeshTopologyVertex</a>* MeshTopologyVertex() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02451"></a><span class="lineno"> 2451</span>&#160; </div>
<div class="line"><a name="l02452"></a><span class="lineno"> 2452</span>&#160;  <span class="comment">// overrides of virtual ON_Object functions</span></div>
<div class="line"><a name="l02453"></a><span class="lineno"> 2453</span>&#160;  ON_BOOL32 IsValid( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>* text_log = NULL ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l02454"></a><span class="lineno"> 2454</span>&#160;  <span class="keywordtype">void</span> Dump( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>&amp; ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l02455"></a><span class="lineno"> 2455</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> SizeOf() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02456"></a><span class="lineno"> 2456</span>&#160;  ON::object_type ObjectType() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02457"></a><span class="lineno"> 2457</span>&#160; </div>
<div class="line"><a name="l02458"></a><span class="lineno"> 2458</span>&#160;  <span class="comment">// overrides of virtual ON_Geometry functions</span></div>
<div class="line"><a name="l02459"></a><span class="lineno"> 2459</span>&#160;  <span class="keywordtype">int</span> Dimension() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02460"></a><span class="lineno"> 2460</span>&#160;  ON_BOOL32 GetBBox(</div>
<div class="line"><a name="l02461"></a><span class="lineno"> 2461</span>&#160;         <span class="keywordtype">double</span>* boxmin,</div>
<div class="line"><a name="l02462"></a><span class="lineno"> 2462</span>&#160;         <span class="keywordtype">double</span>* boxmax,</div>
<div class="line"><a name="l02463"></a><span class="lineno"> 2463</span>&#160;         <span class="keywordtype">int</span> bGrowBox = <span class="keyword">false</span></div>
<div class="line"><a name="l02464"></a><span class="lineno"> 2464</span>&#160;         ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l02465"></a><span class="lineno"> 2465</span>&#160;  ON_BOOL32 Transform( </div>
<div class="line"><a name="l02466"></a><span class="lineno"> 2466</span>&#160;         <span class="keyword">const</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>&amp; xform</div>
<div class="line"><a name="l02467"></a><span class="lineno"> 2467</span>&#160;         );</div>
<div class="line"><a name="l02468"></a><span class="lineno"> 2468</span>&#160;};</div>
<div class="line"><a name="l02469"></a><span class="lineno"> 2469</span>&#160; </div>
<div class="line"><a name="l02470"></a><span class="lineno"><a class="line" href="class_o_n___mesh_edge_ref.html"> 2470</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___mesh_edge_ref.html">ON_MeshEdgeRef</a> : <span class="keyword">public</span> <a class="code" href="class_o_n___geometry.html">ON_Geometry</a></div>
<div class="line"><a name="l02471"></a><span class="lineno"> 2471</span>&#160;{</div>
<div class="line"><a name="l02472"></a><span class="lineno"> 2472</span>&#160;  ON_OBJECT_DECLARE(<a class="code" href="class_o_n___mesh_edge_ref.html">ON_MeshEdgeRef</a>);</div>
<div class="line"><a name="l02473"></a><span class="lineno"> 2473</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l02474"></a><span class="lineno"> 2474</span>&#160;  <a class="code" href="class_o_n___mesh_edge_ref.html">ON_MeshEdgeRef</a>();</div>
<div class="line"><a name="l02475"></a><span class="lineno"> 2475</span>&#160;  ~<a class="code" href="class_o_n___mesh_edge_ref.html">ON_MeshEdgeRef</a>();</div>
<div class="line"><a name="l02476"></a><span class="lineno"> 2476</span>&#160;  <a class="code" href="class_o_n___mesh_edge_ref.html">ON_MeshEdgeRef</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="class_o_n___mesh_edge_ref.html">ON_MeshEdgeRef</a>&amp;);</div>
<div class="line"><a name="l02477"></a><span class="lineno"> 2477</span>&#160; </div>
<div class="line"><a name="l02478"></a><span class="lineno"> 2478</span>&#160;  <span class="comment">// parent mesh</span></div>
<div class="line"><a name="l02479"></a><span class="lineno"> 2479</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>* m_mesh;</div>
<div class="line"><a name="l02480"></a><span class="lineno"> 2480</span>&#160;  </div>
<div class="line"><a name="l02481"></a><span class="lineno"> 2481</span>&#160;  <span class="comment">// m_mesh-&gt;m_top.m_tope[] index</span></div>
<div class="line"><a name="l02482"></a><span class="lineno"> 2482</span>&#160;  <span class="keywordtype">int</span> m_top_ei; </div>
<div class="line"><a name="l02483"></a><span class="lineno"> 2483</span>&#160; </div>
<div class="line"><a name="l02484"></a><span class="lineno"> 2484</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02485"></a><span class="lineno"> 2485</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l02486"></a><span class="lineno"> 2486</span>&#160;<span class="comment">    Override of the virtual ON_Geometry::ComponentIndex().</span></div>
<div class="line"><a name="l02487"></a><span class="lineno"> 2487</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02488"></a><span class="lineno"> 2488</span>&#160;<span class="comment">    A mesh component index for the edge.  The type is</span></div>
<div class="line"><a name="l02489"></a><span class="lineno"> 2489</span>&#160;<span class="comment">    ON_COMPONENT_INDEX::meshtop_edge and the index is the</span></div>
<div class="line"><a name="l02490"></a><span class="lineno"> 2490</span>&#160;<span class="comment">    index into the ON_MeshTopology.m_tope[] array.</span></div>
<div class="line"><a name="l02491"></a><span class="lineno"> 2491</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02492"></a><span class="lineno"> 2492</span>&#160;  ON_COMPONENT_INDEX ComponentIndex() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02493"></a><span class="lineno"> 2493</span>&#160; </div>
<div class="line"><a name="l02494"></a><span class="lineno"> 2494</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02495"></a><span class="lineno"> 2495</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02496"></a><span class="lineno"> 2496</span>&#160;<span class="comment">    The mesh topology associated with this </span></div>
<div class="line"><a name="l02497"></a><span class="lineno"> 2497</span>&#160;<span class="comment">    mesh edge reference or NULL if it doesn&#39;t</span></div>
<div class="line"><a name="l02498"></a><span class="lineno"> 2498</span>&#160;<span class="comment">    exist.</span></div>
<div class="line"><a name="l02499"></a><span class="lineno"> 2499</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02500"></a><span class="lineno"> 2500</span>&#160; </div>
<div class="line"><a name="l02501"></a><span class="lineno"> 2501</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___mesh_topology.html">ON_MeshTopology</a>* MeshTopology() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02502"></a><span class="lineno"> 2502</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02503"></a><span class="lineno"> 2503</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02504"></a><span class="lineno"> 2504</span>&#160;<span class="comment">    The 3d location of the mesh edge.  Returns</span></div>
<div class="line"><a name="l02505"></a><span class="lineno"> 2505</span>&#160;<span class="comment">    ON_UNSET_POINT,ON_UNSET_POINT, is this ON_MeshEdgeRef</span></div>
<div class="line"><a name="l02506"></a><span class="lineno"> 2506</span>&#160;<span class="comment">    is not valid.</span></div>
<div class="line"><a name="l02507"></a><span class="lineno"> 2507</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02508"></a><span class="lineno"> 2508</span>&#160;  <a class="code" href="class_o_n___line.html">ON_Line</a> Line() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02509"></a><span class="lineno"> 2509</span>&#160; </div>
<div class="line"><a name="l02510"></a><span class="lineno"> 2510</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02511"></a><span class="lineno"> 2511</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02512"></a><span class="lineno"> 2512</span>&#160;<span class="comment">    The mesh topology edge associated with this </span></div>
<div class="line"><a name="l02513"></a><span class="lineno"> 2513</span>&#160;<span class="comment">    mesh edge reference.</span></div>
<div class="line"><a name="l02514"></a><span class="lineno"> 2514</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02515"></a><span class="lineno"> 2515</span>&#160;  <span class="keyword">const</span> <a class="code" href="struct_o_n___mesh_topology_edge.html">ON_MeshTopologyEdge</a>* MeshTopologyEdge() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02516"></a><span class="lineno"> 2516</span>&#160; </div>
<div class="line"><a name="l02517"></a><span class="lineno"> 2517</span>&#160;  <span class="comment">// overrides of virtual ON_Object functions</span></div>
<div class="line"><a name="l02518"></a><span class="lineno"> 2518</span>&#160;  ON_BOOL32 IsValid( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>* text_log = NULL ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l02519"></a><span class="lineno"> 2519</span>&#160;  <span class="keywordtype">void</span> Dump( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>&amp; ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l02520"></a><span class="lineno"> 2520</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> SizeOf() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02521"></a><span class="lineno"> 2521</span>&#160;  ON::object_type ObjectType() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02522"></a><span class="lineno"> 2522</span>&#160; </div>
<div class="line"><a name="l02523"></a><span class="lineno"> 2523</span>&#160;  <span class="comment">// overrides of virtual ON_Geometry functions</span></div>
<div class="line"><a name="l02524"></a><span class="lineno"> 2524</span>&#160;  <span class="keywordtype">int</span> Dimension() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02525"></a><span class="lineno"> 2525</span>&#160;  ON_BOOL32 GetBBox(</div>
<div class="line"><a name="l02526"></a><span class="lineno"> 2526</span>&#160;         <span class="keywordtype">double</span>* boxmin,</div>
<div class="line"><a name="l02527"></a><span class="lineno"> 2527</span>&#160;         <span class="keywordtype">double</span>* boxmax,</div>
<div class="line"><a name="l02528"></a><span class="lineno"> 2528</span>&#160;         <span class="keywordtype">int</span> bGrowBox = <span class="keyword">false</span></div>
<div class="line"><a name="l02529"></a><span class="lineno"> 2529</span>&#160;         ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l02530"></a><span class="lineno"> 2530</span>&#160;  ON_BOOL32 Transform( </div>
<div class="line"><a name="l02531"></a><span class="lineno"> 2531</span>&#160;         <span class="keyword">const</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>&amp; xform</div>
<div class="line"><a name="l02532"></a><span class="lineno"> 2532</span>&#160;         );</div>
<div class="line"><a name="l02533"></a><span class="lineno"> 2533</span>&#160;};</div>
<div class="line"><a name="l02534"></a><span class="lineno"> 2534</span>&#160; </div>
<div class="line"><a name="l02535"></a><span class="lineno"><a class="line" href="class_o_n___mesh_face_ref.html"> 2535</a></span>&#160;<span class="keyword">class </span>ON_CLASS <a class="code" href="class_o_n___mesh_face_ref.html">ON_MeshFaceRef</a> : <span class="keyword">public</span> <a class="code" href="class_o_n___geometry.html">ON_Geometry</a></div>
<div class="line"><a name="l02536"></a><span class="lineno"> 2536</span>&#160;{</div>
<div class="line"><a name="l02537"></a><span class="lineno"> 2537</span>&#160;  ON_OBJECT_DECLARE(<a class="code" href="class_o_n___mesh_face_ref.html">ON_MeshFaceRef</a>);</div>
<div class="line"><a name="l02538"></a><span class="lineno"> 2538</span>&#160;<span class="keyword">public</span>:</div>
<div class="line"><a name="l02539"></a><span class="lineno"> 2539</span>&#160;  <a class="code" href="class_o_n___mesh_face_ref.html">ON_MeshFaceRef</a>();</div>
<div class="line"><a name="l02540"></a><span class="lineno"> 2540</span>&#160;  ~<a class="code" href="class_o_n___mesh_face_ref.html">ON_MeshFaceRef</a>();</div>
<div class="line"><a name="l02541"></a><span class="lineno"> 2541</span>&#160;  <a class="code" href="class_o_n___mesh_face_ref.html">ON_MeshFaceRef</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="class_o_n___mesh_face_ref.html">ON_MeshFaceRef</a>&amp;);</div>
<div class="line"><a name="l02542"></a><span class="lineno"> 2542</span>&#160; </div>
<div class="line"><a name="l02543"></a><span class="lineno"> 2543</span>&#160;  <span class="comment">// parent mesh</span></div>
<div class="line"><a name="l02544"></a><span class="lineno"> 2544</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>* m_mesh;</div>
<div class="line"><a name="l02545"></a><span class="lineno"> 2545</span>&#160; </div>
<div class="line"><a name="l02546"></a><span class="lineno"> 2546</span>&#160;  <span class="comment">// m_mesh-&gt;m_F[] and m_mesh-&gt;m_top.m_tope[] index.</span></div>
<div class="line"><a name="l02547"></a><span class="lineno"> 2547</span>&#160;  <span class="keywordtype">int</span> m_mesh_fi; </div>
<div class="line"><a name="l02548"></a><span class="lineno"> 2548</span>&#160; </div>
<div class="line"><a name="l02549"></a><span class="lineno"> 2549</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02550"></a><span class="lineno"> 2550</span>&#160;<span class="comment">  Description:</span></div>
<div class="line"><a name="l02551"></a><span class="lineno"> 2551</span>&#160;<span class="comment">    Override of the virtual ON_Geometry::ComponentIndex().</span></div>
<div class="line"><a name="l02552"></a><span class="lineno"> 2552</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02553"></a><span class="lineno"> 2553</span>&#160;<span class="comment">    A mesh component index for the face.  The type is</span></div>
<div class="line"><a name="l02554"></a><span class="lineno"> 2554</span>&#160;<span class="comment">    ON_COMPONENT_INDEX::mesh_face and the index is the</span></div>
<div class="line"><a name="l02555"></a><span class="lineno"> 2555</span>&#160;<span class="comment">    index into the ON_Mesh.m_F[] array.</span></div>
<div class="line"><a name="l02556"></a><span class="lineno"> 2556</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02557"></a><span class="lineno"> 2557</span>&#160;  ON_COMPONENT_INDEX ComponentIndex() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02558"></a><span class="lineno"> 2558</span>&#160; </div>
<div class="line"><a name="l02559"></a><span class="lineno"> 2559</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02560"></a><span class="lineno"> 2560</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02561"></a><span class="lineno"> 2561</span>&#160;<span class="comment">    The mesh topology associated with this </span></div>
<div class="line"><a name="l02562"></a><span class="lineno"> 2562</span>&#160;<span class="comment">    mesh face reference or NULL if it doesn&#39;t</span></div>
<div class="line"><a name="l02563"></a><span class="lineno"> 2563</span>&#160;<span class="comment">    exist.</span></div>
<div class="line"><a name="l02564"></a><span class="lineno"> 2564</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02565"></a><span class="lineno"> 2565</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___mesh_topology.html">ON_MeshTopology</a>* MeshTopology() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02566"></a><span class="lineno"> 2566</span>&#160; </div>
<div class="line"><a name="l02567"></a><span class="lineno"> 2567</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02568"></a><span class="lineno"> 2568</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02569"></a><span class="lineno"> 2569</span>&#160;<span class="comment">    The mesh face associated with this mesh face reference.</span></div>
<div class="line"><a name="l02570"></a><span class="lineno"> 2570</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02571"></a><span class="lineno"> 2571</span>&#160;  <span class="keyword">const</span> <a class="code" href="class_o_n___mesh_face.html">ON_MeshFace</a>* MeshFace() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02572"></a><span class="lineno"> 2572</span>&#160; </div>
<div class="line"><a name="l02573"></a><span class="lineno"> 2573</span>&#160;  <span class="comment">/*</span></div>
<div class="line"><a name="l02574"></a><span class="lineno"> 2574</span>&#160;<span class="comment">  Returns:</span></div>
<div class="line"><a name="l02575"></a><span class="lineno"> 2575</span>&#160;<span class="comment">    The mesh topology face associated with this </span></div>
<div class="line"><a name="l02576"></a><span class="lineno"> 2576</span>&#160;<span class="comment">    mesh face reference.</span></div>
<div class="line"><a name="l02577"></a><span class="lineno"> 2577</span>&#160;<span class="comment">  */</span></div>
<div class="line"><a name="l02578"></a><span class="lineno"> 2578</span>&#160;  <span class="keyword">const</span> <a class="code" href="struct_o_n___mesh_topology_face.html">ON_MeshTopologyFace</a>* MeshTopologyFace() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02579"></a><span class="lineno"> 2579</span>&#160; </div>
<div class="line"><a name="l02580"></a><span class="lineno"> 2580</span>&#160;  <span class="comment">// overrides of virtual ON_Object functions</span></div>
<div class="line"><a name="l02581"></a><span class="lineno"> 2581</span>&#160;  ON_BOOL32 IsValid( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>* text_log = NULL ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l02582"></a><span class="lineno"> 2582</span>&#160;  <span class="keywordtype">void</span> Dump( <a class="code" href="class_o_n___text_log.html">ON_TextLog</a>&amp; ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l02583"></a><span class="lineno"> 2583</span>&#160;  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> SizeOf() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02584"></a><span class="lineno"> 2584</span>&#160;  ON::object_type ObjectType() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02585"></a><span class="lineno"> 2585</span>&#160; </div>
<div class="line"><a name="l02586"></a><span class="lineno"> 2586</span>&#160;  <span class="comment">// overrides of virtual ON_Geometry functions</span></div>
<div class="line"><a name="l02587"></a><span class="lineno"> 2587</span>&#160;  <span class="keywordtype">int</span> Dimension() <span class="keyword">const</span>;</div>
<div class="line"><a name="l02588"></a><span class="lineno"> 2588</span>&#160;  ON_BOOL32 GetBBox(</div>
<div class="line"><a name="l02589"></a><span class="lineno"> 2589</span>&#160;         <span class="keywordtype">double</span>* boxmin,</div>
<div class="line"><a name="l02590"></a><span class="lineno"> 2590</span>&#160;         <span class="keywordtype">double</span>* boxmax,</div>
<div class="line"><a name="l02591"></a><span class="lineno"> 2591</span>&#160;         <span class="keywordtype">int</span> bGrowBox = <span class="keyword">false</span></div>
<div class="line"><a name="l02592"></a><span class="lineno"> 2592</span>&#160;         ) <span class="keyword">const</span>;</div>
<div class="line"><a name="l02593"></a><span class="lineno"> 2593</span>&#160;  ON_BOOL32 Transform( </div>
<div class="line"><a name="l02594"></a><span class="lineno"> 2594</span>&#160;         <span class="keyword">const</span> <a class="code" href="class_o_n___xform.html">ON_Xform</a>&amp; xform</div>
<div class="line"><a name="l02595"></a><span class="lineno"> 2595</span>&#160;         );</div>
<div class="line"><a name="l02596"></a><span class="lineno"> 2596</span>&#160;};</div>
<div class="line"><a name="l02597"></a><span class="lineno"> 2597</span>&#160; </div>
<div class="line"><a name="l02598"></a><span class="lineno"> 2598</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l02599"></a><span class="lineno"> 2599</span>&#160;<span class="comment">Description:</span></div>
<div class="line"><a name="l02600"></a><span class="lineno"> 2600</span>&#160;<span class="comment">  Calculate a mesh representation of the NURBS surface&#39;s control polygon.</span></div>
<div class="line"><a name="l02601"></a><span class="lineno"> 2601</span>&#160;<span class="comment">Parameters:</span></div>
<div class="line"><a name="l02602"></a><span class="lineno"> 2602</span>&#160;<span class="comment">  nurbs_surface - [in]</span></div>
<div class="line"><a name="l02603"></a><span class="lineno"> 2603</span>&#160;<span class="comment">  bCleanMesh - [in] If true, then degenerate quads are cleaned</span></div>
<div class="line"><a name="l02604"></a><span class="lineno"> 2604</span>&#160;<span class="comment">                    up to be triangles. Surfaces with singular</span></div>
<div class="line"><a name="l02605"></a><span class="lineno"> 2605</span>&#160;<span class="comment">                    sides are a common source of degenerate qauds.</span></div>
<div class="line"><a name="l02606"></a><span class="lineno"> 2606</span>&#160;<span class="comment">  input_mesh - [in] If NULL, then the returned mesh is created</span></div>
<div class="line"><a name="l02607"></a><span class="lineno"> 2607</span>&#160;<span class="comment">       by a class to new ON_Mesh().  If not null, then this </span></div>
<div class="line"><a name="l02608"></a><span class="lineno"> 2608</span>&#160;<span class="comment">       mesh will be used to store the conrol polygon.</span></div>
<div class="line"><a name="l02609"></a><span class="lineno"> 2609</span>&#160;<span class="comment">Returns:</span></div>
<div class="line"><a name="l02610"></a><span class="lineno"> 2610</span>&#160;<span class="comment">  If successful, a pointer to a mesh.</span></div>
<div class="line"><a name="l02611"></a><span class="lineno"> 2611</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l02612"></a><span class="lineno"> 2612</span>&#160;ON_DECL</div>
<div class="line"><a name="l02613"></a><span class="lineno"> 2613</span>&#160;<a class="code" href="class_o_n___mesh.html">ON_Mesh</a>* ON_ControlPolygonMesh( </div>
<div class="line"><a name="l02614"></a><span class="lineno"> 2614</span>&#160;          <span class="keyword">const</span> <a class="code" href="class_o_n___nurbs_surface.html">ON_NurbsSurface</a>&amp; nurbs_surface, </div>
<div class="line"><a name="l02615"></a><span class="lineno"> 2615</span>&#160;          <span class="keywordtype">bool</span> bCleanMesh,</div>
<div class="line"><a name="l02616"></a><span class="lineno"> 2616</span>&#160;          <a class="code" href="class_o_n___mesh.html">ON_Mesh</a>* input_mesh = NULL</div>
<div class="line"><a name="l02617"></a><span class="lineno"> 2617</span>&#160;          );</div>
<div class="line"><a name="l02618"></a><span class="lineno"> 2618</span>&#160; </div>
<div class="line"><a name="l02619"></a><span class="lineno"> 2619</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l02620"></a><span class="lineno"> 2620</span>&#160;<span class="comment">Description:</span></div>
<div class="line"><a name="l02621"></a><span class="lineno"> 2621</span>&#160;<span class="comment">  Finds the unit normal to the triangle</span></div>
<div class="line"><a name="l02622"></a><span class="lineno"> 2622</span>&#160;<span class="comment">Parameters:</span></div>
<div class="line"><a name="l02623"></a><span class="lineno"> 2623</span>&#160;<span class="comment">  A - [in] triangle corner</span></div>
<div class="line"><a name="l02624"></a><span class="lineno"> 2624</span>&#160;<span class="comment">  B - [in] triangle corner</span></div>
<div class="line"><a name="l02625"></a><span class="lineno"> 2625</span>&#160;<span class="comment">  C - [in] triangle corner</span></div>
<div class="line"><a name="l02626"></a><span class="lineno"> 2626</span>&#160;<span class="comment">Returns:</span></div>
<div class="line"><a name="l02627"></a><span class="lineno"> 2627</span>&#160;<span class="comment">  Unit normal</span></div>
<div class="line"><a name="l02628"></a><span class="lineno"> 2628</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l02629"></a><span class="lineno"> 2629</span>&#160;ON_DECL</div>
<div class="line"><a name="l02630"></a><span class="lineno"> 2630</span>&#160;<a class="code" href="class_o_n__3d_vector.html">ON_3dVector</a> ON_TriangleNormal(</div>
<div class="line"><a name="l02631"></a><span class="lineno"> 2631</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; A,</div>
<div class="line"><a name="l02632"></a><span class="lineno"> 2632</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; B,</div>
<div class="line"><a name="l02633"></a><span class="lineno"> 2633</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; C</div>
<div class="line"><a name="l02634"></a><span class="lineno"> 2634</span>&#160;        );</div>
<div class="line"><a name="l02635"></a><span class="lineno"> 2635</span>&#160; </div>
<div class="line"><a name="l02636"></a><span class="lineno"> 2636</span>&#160; </div>
<div class="line"><a name="l02637"></a><span class="lineno"> 2637</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l02638"></a><span class="lineno"> 2638</span>&#160;<span class="comment">Description:</span></div>
<div class="line"><a name="l02639"></a><span class="lineno"> 2639</span>&#160;<span class="comment">  Finds the unit normal to the triangle</span></div>
<div class="line"><a name="l02640"></a><span class="lineno"> 2640</span>&#160;<span class="comment">Parameters:</span></div>
<div class="line"><a name="l02641"></a><span class="lineno"> 2641</span>&#160;<span class="comment">  A - [in] triangle corner</span></div>
<div class="line"><a name="l02642"></a><span class="lineno"> 2642</span>&#160;<span class="comment">  B - [in] triangle corner</span></div>
<div class="line"><a name="l02643"></a><span class="lineno"> 2643</span>&#160;<span class="comment">  C - [in] triangle corner</span></div>
<div class="line"><a name="l02644"></a><span class="lineno"> 2644</span>&#160;<span class="comment">  a - [out] must not be null</span></div>
<div class="line"><a name="l02645"></a><span class="lineno"> 2645</span>&#160;<span class="comment">  b - [out] must not be null</span></div>
<div class="line"><a name="l02646"></a><span class="lineno"> 2646</span>&#160;<span class="comment">  c - [out] must not be null</span></div>
<div class="line"><a name="l02647"></a><span class="lineno"> 2647</span>&#160;<span class="comment">  d - [out] must not be null</span></div>
<div class="line"><a name="l02648"></a><span class="lineno"> 2648</span>&#160;<span class="comment">    The equation of the plane is a*x + b*y + c*z + d = 0</span></div>
<div class="line"><a name="l02649"></a><span class="lineno"> 2649</span>&#160;<span class="comment">  ev_tol - [out]</span></div>
<div class="line"><a name="l02650"></a><span class="lineno"> 2650</span>&#160;<span class="comment">    If ev_tol is not null, then it is the maximum absolute</span></div>
<div class="line"><a name="l02651"></a><span class="lineno"> 2651</span>&#160;<span class="comment">    value of the plane equation evaluated at A,B,C.  Mathematically,</span></div>
<div class="line"><a name="l02652"></a><span class="lineno"> 2652</span>&#160;<span class="comment">    ev_tol is zero.  Since these computations are performed with</span></div>
<div class="line"><a name="l02653"></a><span class="lineno"> 2653</span>&#160;<span class="comment">    finite precision doubles, ev_tol is generally not zero.</span></div>
<div class="line"><a name="l02654"></a><span class="lineno"> 2654</span>&#160;<span class="comment">Returns:</span></div>
<div class="line"><a name="l02655"></a><span class="lineno"> 2655</span>&#160;<span class="comment">  Unit normal</span></div>
<div class="line"><a name="l02656"></a><span class="lineno"> 2656</span>&#160;<span class="comment">*/</span></div>
<div class="line"><a name="l02657"></a><span class="lineno"> 2657</span>&#160;ON_DECL</div>
<div class="line"><a name="l02658"></a><span class="lineno"> 2658</span>&#160;<span class="keywordtype">bool</span> ON_GetTrianglePlaneEquation(</div>
<div class="line"><a name="l02659"></a><span class="lineno"> 2659</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; A,</div>
<div class="line"><a name="l02660"></a><span class="lineno"> 2660</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; B,</div>
<div class="line"><a name="l02661"></a><span class="lineno"> 2661</span>&#160;        <span class="keyword">const</span> <a class="code" href="class_o_n__3d_point.html">ON_3dPoint</a>&amp; C,</div>
<div class="line"><a name="l02662"></a><span class="lineno"> 2662</span>&#160;        <span class="keywordtype">double</span>* a,</div>
<div class="line"><a name="l02663"></a><span class="lineno"> 2663</span>&#160;        <span class="keywordtype">double</span>* b,</div>
<div class="line"><a name="l02664"></a><span class="lineno"> 2664</span>&#160;        <span class="keywordtype">double</span>* c,</div>
<div class="line"><a name="l02665"></a><span class="lineno"> 2665</span>&#160;        <span class="keywordtype">double</span>* d,</div>
<div class="line"><a name="l02666"></a><span class="lineno"> 2666</span>&#160;        <span class="keywordtype">double</span>* evaluation_tol</div>
<div class="line"><a name="l02667"></a><span class="lineno"> 2667</span>&#160;        );</div>
<div class="line"><a name="l02668"></a><span class="lineno"> 2668</span>&#160; </div>
<div class="line"><a name="l02669"></a><span class="lineno"> 2669</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="aclass_o_n__2d_point_array_html"><div class="ttname"><a href="class_o_n__2d_point_array.html">ON_2dPointArray</a></div><div class="ttdef"><b>Definition:</b> opennurbs_array.h:415</div></div>
<div class="ttc" id="aclass_o_n__2f_point_array_html"><div class="ttname"><a href="class_o_n__2f_point_array.html">ON_2fPointArray</a></div><div class="ttdef"><b>Definition:</b> opennurbs_array.h:438</div></div>
<div class="ttc" id="aclass_o_n__3d_point_array_html"><div class="ttname"><a href="class_o_n__3d_point_array.html">ON_3dPointArray</a></div><div class="ttdef"><b>Definition:</b> opennurbs_array.h:460</div></div>
<div class="ttc" id="aclass_o_n__3d_point_html"><div class="ttname"><a href="class_o_n__3d_point.html">ON_3dPoint</a></div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:419</div></div>
<div class="ttc" id="aclass_o_n__3d_vector_html"><div class="ttname"><a href="class_o_n__3d_vector.html">ON_3dVector</a></div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:953</div></div>
<div class="ttc" id="aclass_o_n__3f_point_array_html"><div class="ttname"><a href="class_o_n__3f_point_array.html">ON_3fPointArray</a></div><div class="ttdef"><b>Definition:</b> opennurbs_array.h:664</div></div>
<div class="ttc" id="aclass_o_n__3f_point_html"><div class="ttname"><a href="class_o_n__3f_point.html">ON_3fPoint</a></div><div class="ttdef"><b>Definition:</b> opennurbs_fpoint.h:175</div></div>
<div class="ttc" id="aclass_o_n__3f_vector_array_html"><div class="ttname"><a href="class_o_n__3f_vector_array.html">ON_3fVectorArray</a></div><div class="ttdef"><b>Definition:</b> opennurbs_array.h:789</div></div>
<div class="ttc" id="aclass_o_n__3f_vector_html"><div class="ttname"><a href="class_o_n__3f_vector.html">ON_3fVector</a></div><div class="ttdef"><b>Definition:</b> opennurbs_fpoint.h:632</div></div>
<div class="ttc" id="aclass_o_n___binary_archive_html"><div class="ttname"><a href="class_o_n___binary_archive.html">ON_BinaryArchive</a></div><div class="ttdef"><b>Definition:</b> opennurbs_archive.h:732</div></div>
<div class="ttc" id="aclass_o_n___bounding_box_html"><div class="ttname"><a href="class_o_n___bounding_box.html">ON_BoundingBox</a></div><div class="ttdef"><b>Definition:</b> opennurbs_bounding_box.h:26</div></div>
<div class="ttc" id="aclass_o_n___class_array_html"><div class="ttname"><a href="class_o_n___class_array.html">ON_ClassArray&lt; ON_TextureCoordinates &gt;</a></div></div>
<div class="ttc" id="aclass_o_n___geometry_html"><div class="ttname"><a href="class_o_n___geometry.html">ON_Geometry</a></div><div class="ttdef"><b>Definition:</b> opennurbs_geometry.h:37</div></div>
<div class="ttc" id="aclass_o_n___interval_html"><div class="ttname"><a href="class_o_n___interval.html">ON_Interval</a></div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:49</div></div>
<div class="ttc" id="aclass_o_n___line_html"><div class="ttname"><a href="class_o_n___line.html">ON_Line</a></div><div class="ttdef"><b>Definition:</b> opennurbs_line.h:21</div></div>
<div class="ttc" id="aclass_o_n___mapping_tag_html"><div class="ttname"><a href="class_o_n___mapping_tag.html">ON_MappingTag</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:916</div></div>
<div class="ttc" id="aclass_o_n___mesh_curvature_stats_html"><div class="ttname"><a href="class_o_n___mesh_curvature_stats.html">ON_MeshCurvatureStats</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:273</div></div>
<div class="ttc" id="aclass_o_n___mesh_edge_ref_html"><div class="ttname"><a href="class_o_n___mesh_edge_ref.html">ON_MeshEdgeRef</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:2471</div></div>
<div class="ttc" id="aclass_o_n___mesh_face_html"><div class="ttname"><a href="class_o_n___mesh_face.html">ON_MeshFace</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:417</div></div>
<div class="ttc" id="aclass_o_n___mesh_face_ref_html"><div class="ttname"><a href="class_o_n___mesh_face_ref.html">ON_MeshFaceRef</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:2536</div></div>
<div class="ttc" id="aclass_o_n___mesh_html"><div class="ttname"><a href="class_o_n___mesh.html">ON_Mesh</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:990</div></div>
<div class="ttc" id="aclass_o_n___mesh_ngon_list_html"><div class="ttname"><a href="class_o_n___mesh_ngon_list.html">ON_MeshNgonList</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:827</div></div>
<div class="ttc" id="aclass_o_n___mesh_parameters_html"><div class="ttname"><a href="class_o_n___mesh_parameters.html">ON_MeshParameters</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:25</div></div>
<div class="ttc" id="aclass_o_n___mesh_partition_html"><div class="ttname"><a href="class_o_n___mesh_partition.html">ON_MeshPartition</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:892</div></div>
<div class="ttc" id="aclass_o_n___mesh_topology_html"><div class="ttname"><a href="class_o_n___mesh_topology.html">ON_MeshTopology</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:566</div></div>
<div class="ttc" id="aclass_o_n___mesh_vertex_ref_html"><div class="ttname"><a href="class_o_n___mesh_vertex_ref.html">ON_MeshVertexRef</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:2398</div></div>
<div class="ttc" id="aclass_o_n___nurbs_surface_html"><div class="ttname"><a href="class_o_n___nurbs_surface.html">ON_NurbsSurface</a></div><div class="ttdef"><b>Definition:</b> opennurbs_nurbssurface.h:65</div></div>
<div class="ttc" id="aclass_o_n___obj_ref_html"><div class="ttname"><a href="class_o_n___obj_ref.html">ON_ObjRef</a></div><div class="ttdef"><b>Definition:</b> opennurbs_objref.h:168</div></div>
<div class="ttc" id="aclass_o_n___object_html"><div class="ttname"><a href="class_o_n___object.html">ON_Object</a></div><div class="ttdef"><b>Definition:</b> opennurbs_object.h:377</div></div>
<div class="ttc" id="aclass_o_n___simple_array_html"><div class="ttname"><a href="class_o_n___simple_array.html">ON_SimpleArray&lt; ON_MeshFace &gt;</a></div></div>
<div class="ttc" id="aclass_o_n___surface_curvature_html"><div class="ttname"><a href="class_o_n___surface_curvature.html">ON_SurfaceCurvature</a></div><div class="ttdef"><b>Definition:</b> opennurbs_point.h:1580</div></div>
<div class="ttc" id="aclass_o_n___surface_html"><div class="ttname"><a href="class_o_n___surface.html">ON_Surface</a></div><div class="ttdef"><b>Definition:</b> opennurbs_surface.h:45</div></div>
<div class="ttc" id="aclass_o_n___text_log_html"><div class="ttname"><a href="class_o_n___text_log.html">ON_TextLog</a></div><div class="ttdef"><b>Definition:</b> opennurbs_textlog.h:23</div></div>
<div class="ttc" id="aclass_o_n___texture_coordinates_html"><div class="ttname"><a href="class_o_n___texture_coordinates.html">ON_TextureCoordinates</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:968</div></div>
<div class="ttc" id="aclass_o_n___texture_mapping_html"><div class="ttname"><a href="class_o_n___texture_mapping.html">ON_TextureMapping</a></div><div class="ttdef"><b>Definition:</b> opennurbs_texture_mapping.h:38</div></div>
<div class="ttc" id="aclass_o_n___u_u_i_d_html"><div class="ttname"><a href="class_o_n___u_u_i_d.html">ON_UUID</a></div><div class="ttdef"><b>Definition:</b> opennurbs_uuid.h:32</div></div>
<div class="ttc" id="aclass_o_n___xform_html"><div class="ttname"><a href="class_o_n___xform.html">ON_Xform</a></div><div class="ttdef"><b>Definition:</b> opennurbs_xform.h:29</div></div>
<div class="ttc" id="astruct_o_n___mesh_face_side_html"><div class="ttname"><a href="struct_o_n___mesh_face_side.html">ON_MeshFaceSide</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:515</div></div>
<div class="ttc" id="astruct_o_n___mesh_ngon_html"><div class="ttname"><a href="struct_o_n___mesh_ngon.html">ON_MeshNgon</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:806</div></div>
<div class="ttc" id="astruct_o_n___mesh_part_html"><div class="ttname"><a href="struct_o_n___mesh_part.html">ON_MeshPart</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:542</div></div>
<div class="ttc" id="astruct_o_n___mesh_topology_1_1memchunk_html"><div class="ttname"><a href="struct_o_n___mesh_topology_1_1memchunk.html">ON_MeshTopology::memchunk</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:788</div></div>
<div class="ttc" id="astruct_o_n___mesh_topology_edge_html"><div class="ttname"><a href="struct_o_n___mesh_topology_edge.html">ON_MeshTopologyEdge</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:334</div></div>
<div class="ttc" id="astruct_o_n___mesh_topology_face_html"><div class="ttname"><a href="struct_o_n___mesh_topology_face.html">ON_MeshTopologyFace</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:348</div></div>
<div class="ttc" id="astruct_o_n___mesh_topology_vertex_html"><div class="ttname"><a href="struct_o_n___mesh_topology_vertex.html">ON_MeshTopologyVertex</a></div><div class="ttdef"><b>Definition:</b> opennurbs_mesh.h:312</div></div>
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